snapshot_download error after ~20%

[satyrmipt]

Describe the bug

Im trying to find out why snapshot_download returns

RuntimeError: Data processing error: CAS service error : ReqwestMiddleware Error: Request failed after 5 retries

after some first successive load steps. I commented errors on different models:

snapshot_download(
    repo_id="Helsinki-NLP/opus-mt-ru-en", # failed at Fetching 11 files:  36%|███▋      | 4/11 [00:33<00:57,  8.28s/it]
    # repo_id="google-t5/t5-base",  # failed at Fetching 11 files:  27%|██▋       | 3/11 [01:12<03:13, 24.18s/it]
    # repo_id="google-t5/t5-small", # failed atFetching 20 files:  15%|█▌        | 3/20 [01:05<06:13, 21.95s/it]
    local_dir="./opus-mt-ru-en"
)

I also try to execute !hf download --repo-type model Helsinki-NLP/opus-mt-ru-en --local-dir ./opus-mt-ru-en
and the error was

File "C:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\requests\adapters.py", line 675, in send
raise SSLError(e, request=request)
requests.exceptions.SSLError: (MaxRetryError("HTTPSConnectionPool(host='huggingface.co', port=443): Max retries exceeded with url: /api/models/Helsinki-NLP/opus-mt-ru-en/revision/main (Caused by SSLError(SSLCertVerificationError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: self-signed certificate in certificate chain (_ssl.c:1016)')))"), '(Request ID: 42911224-7bda-43e2-92a2-e4c3984f7060)')

despity I tried every approach to turn off ssl verification i found on internet\deepseek.

After the snapshot_download failed i have the next files in destination folder:
13.10.2025 23:41

.
13.10.2025 23:41 ..
13.10.2025 23:41 .cache
13.10.2025 23:41 345 .gitattributes
13.10.2025 23:41 1 381 config.json
13.10.2025 23:41 293 generation_config.json
13.10.2025 23:41 3 159 README.md
13.10.2025 23:41 1 080 169 source.spm
13.10.2025 23:41 802 781 target.spm
13.10.2025 23:41 42 tokenizer_config.json
13.10.2025 23:41 2 601 758 vocab.json

Reproduction

import os
import ssl
os.environ['HF_HUB_DISABLE_SSL_VERIFICATION'] ='1'

Set environment variables to handle network issues

os.environ['HF_HUB_ENABLE_HF_TRANSFER'] ='1'
os.environ['HF_HUB_DISABLE_PROGRESS_BARS'] = ''
os.environ['HF_HUB_DISABLE_SYMLINKS_WARNING'] ='1'
os.environ['HF_DEBUG']='1'

Increase timeout and retry settings

os.environ['HF_HUB_DOWNLOAD_TIMEOUT'] = '120'
os.environ['REQUEST_TIMEOUT'] = '120'
import huggingface_hub
from huggingface_hub import snapshot_download

ssl_context = ssl.create_default_context()
ssl_context.check_hostname = False
ssl_context.verify_mode = ssl.CERT_NONE

import requests
from huggingface_hub import configure_http_backend

def backend_factory() -> requests.Session:
session = requests.Session()
session.verify = False
return session

configure_http_backend(backend_factory=backend_factory)

print('Some env variablese tham may be connected with sertificates:')
for key, value in os.environ.items():
if ('HF' in key) or ('SSL' in key) or ('CER' in key) or ('CA' in key) or ('BUN' in key) or ('PROX' in key):
print(f"{key}: {value}")
print(f"{ssl_context.verify_mode=}")
print(f"{ssl_context.check_hostname =}")

Download without SSL verification

snapshot_download(
repo_id="Helsinki-NLP/opus-mt-ru-en", # failed at Fetching 11 files: 36%|███▋ | 4/11 [00:33<00:57, 8.28s/it]
# repo_id="google-t5/t5-base", # failed at Fetching 11 files: 27%|██▋ | 3/11 [01:12<03:13, 24.18s/it]
# repo_id="google-t5/t5-small", # failed atFetching 20 files: 15%|█▌ | 3/20 [01:05<06:13, 21.95s/it]
local_dir="./opus-mt-ru-en"
)

Logs

Some env variablese tham may be connected with sertificates:
LOCALAPPDATA: C:\Users\my_user\AppData\Local
SSL_CERT_DIR: C:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Library\ssl\certs
SSL_CERT_FILE: C:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Library\ssl\cacert.pem
VSCODE_CODE_CACHE_PATH: C:\Users\my_user\AppData\Roaming\Code\CachedData\03c265b1adee71ac88f833e065f7bb956b60550a
VSCODE_HANDLES_UNCAUGHT_ERRORS: true
__CONDA_OPENSSL_CERT_DIR_SET: 1
__CONDA_OPENSSL_CERT_FILE_SET: 1
HF_HUB_DISABLE_SSL_VERIFICATION: 1
HF_HUB_ENABLE_HF_TRANSFER: 
HF_HUB_DISABLE_PROGRESS_BARS: 
HF_HUB_DISABLE_SYMLINKS_WARNING: 1
HF_DEBUG: 1
HF_HUB_DOWNLOAD_TIMEOUT: 120
ssl_context.verify_mode=<VerifyMode.CERT_NONE: 0>
ssl_context.check_hostname =False
c:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\urllib3\connectionpool.py:1097: InsecureRequestWarning: Unverified HTTPS request is being made to host 'huggingface.co'. Adding certificate verification is strongly advised. See: https://urllib3.readthedocs.io/en/latest/advanced-usage.html#tls-warnings
  warnings.warn(
Fetching 11 files:   0%|          | 0/11 [00:00<?, ?it/s]c:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\urllib3\connectionpool.py:1097: InsecureRequestWarning: Unverified HTTPS request is being made to host 'huggingface.co'. Adding certificate verification is strongly advised. See: https://urllib3.readthedocs.io/en/latest/advanced-usage.html#tls-warnings
  warnings.warn(
c:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\urllib3\connectionpool.py:1097: InsecureRequestWarning: Unverified HTTPS request is being made to host 'huggingface.co'. Adding certificate verification is strongly advised. See: https://urllib3.readthedocs.io/en/latest/advanced-usage.html#tls-warnings
  warnings.warn(
c:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\urllib3\connectionpool.py:1097: InsecureRequestWarning: Unverified HTTPS request is being made to host 'huggingface.co'. Adding certificate verification is strongly advised. See: https://urllib3.readthedocs.io/en/latest/advanced-usage.html#tls-warnings
  warnings.warn(
c:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\urllib3\connectionpool.py:1097: InsecureRequestWarning: Unverified HTTPS request is being made to host 'huggingface.co'. Adding certificate verification is strongly advised. See: https://urllib3.readthedocs.io/en/latest/advanced-usage.html#tls-warnings
  warnings.warn(
c:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\urllib3\connectionpool.py:1097: InsecureRequestWarning: Unverified HTTPS request is being made to host 'huggingface.co'. Adding certificate verification is strongly advised. See: https://urllib3.readthedocs.io/en/latest/advanced-usage.html#tls-warnings
  warnings.warn(
c:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\urllib3\connectionpool.py:1097: InsecureRequestWarning: Unverified HTTPS request is being made to host 'huggingface.co'. Adding certificate verification is strongly advised. See: https://urllib3.readthedocs.io/en/latest/advanced-usage.html#tls-warnings
  warnings.warn(
c:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\urllib3\connectionpool.py:1097: InsecureRequestWarning: Unverified HTTPS request is being made to host 'huggingface.co'. Adding certificate verification is strongly advised. See: https://urllib3.readthedocs.io/en/latest/advanced-usage.html#tls-warnings
  warnings.warn(
c:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\urllib3\connectionpool.py:1097: InsecureRequestWarning: Unverified HTTPS request is being made to host 'huggingface.co'. Adding certificate verification is strongly advised. See: https://urllib3.readthedocs.io/en/latest/advanced-usage.html#tls-warnings
  warnings.warn(
c:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\urllib3\connectionpool.py:1097: InsecureRequestWarning: Unverified HTTPS request is being made to host 'huggingface.co'. Adding certificate verification is strongly advised. See: https://urllib3.readthedocs.io/en/latest/advanced-usage.html#tls-warnings
  warnings.warn(
c:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\urllib3\connectionpool.py:1097: InsecureRequestWarning: Unverified HTTPS request is being made to host 'huggingface.co'. Adding certificate verification is strongly advised. See: https://urllib3.readthedocs.io/en/latest/advanced-usage.html#tls-warnings
  warnings.warn(
Downloading 'pytorch_model.bin' to 'opus-mt-ru-en\.cache\huggingface\download\Q1p2l2BzM1m6P5jKvr8WTq1TUio=.535450eb5613f3cc912f9ca3e54cfef6c14d201b319c24a88faf776a65538b5d.incomplete'
Xet Storage is enabled for this repo. Downloading file from Xet Storage..
Downloading 'rust_model.ot' to 'opus-mt-ru-en\.cache\huggingface\download\ee-WZw9U-e9t7gTGo9Yn82pHA_c=.5e910b59f7b030d38937da12f8d26a5ef48d5390131528fe08b1078e4dee4b2a.incomplete'
Xet Storage is enabled for this repo. Downloading file from Xet Storage..
c:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\urllib3\connectionpool.py:1097: InsecureRequestWarning: Unverified HTTPS request is being made to host 'huggingface.co'. Adding certificate verification is strongly advised. See: https://urllib3.readthedocs.io/en/latest/advanced-usage.html#tls-warnings
  warnings.warn(
c:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\urllib3\connectionpool.py:1097: InsecureRequestWarning: Unverified HTTPS request is being made to host 'huggingface.co'. Adding certificate verification is strongly advised. See: https://urllib3.readthedocs.io/en/latest/advanced-usage.html#tls-warnings
  warnings.warn(
c:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\urllib3\connectionpool.py:1097: InsecureRequestWarning: Unverified HTTPS request is being made to host 'huggingface.co'. Adding certificate verification is strongly advised. See: https://urllib3.readthedocs.io/en/latest/advanced-usage.html#tls-warnings
  warnings.warn(
c:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\urllib3\connectionpool.py:1097: InsecureRequestWarning: Unverified HTTPS request is being made to host 'huggingface.co'. Adding certificate verification is strongly advised. See: https://urllib3.readthedocs.io/en/latest/advanced-usage.html#tls-warnings
  warnings.warn(
c:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\urllib3\connectionpool.py:1097: InsecureRequestWarning: Unverified HTTPS request is being made to host 'huggingface.co'. Adding certificate verification is strongly advised. See: https://urllib3.readthedocs.io/en/latest/advanced-usage.html#tls-warnings
  warnings.warn(
Downloading '.gitattributes' to 'opus-mt-ru-en\.cache\huggingface\download\wPaCkH-WbT7GsmxMKKrNZTV4nSM=.dc08351d4dc0732d9c8af04070ced089b201ce2f.incomplete'
c:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\urllib3\connectionpool.py:1097: InsecureRequestWarning: Unverified HTTPS request is being made to host 'huggingface.co'. Adding certificate verification is strongly advised. See: https://urllib3.readthedocs.io/en/latest/advanced-usage.html#tls-warnings
  warnings.warn(
c:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\urllib3\connectionpool.py:1097: InsecureRequestWarning: Unverified HTTPS request is being made to host 'huggingface.co'. Adding certificate verification is strongly advised. See: https://urllib3.readthedocs.io/en/latest/advanced-usage.html#tls-warnings
  warnings.warn(
c:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\urllib3\connectionpool.py:1097: InsecureRequestWarning: Unverified HTTPS request is being made to host 'huggingface.co'. Adding certificate verification is strongly advised. See: https://urllib3.readthedocs.io/en/latest/advanced-usage.html#tls-warnings
  warnings.warn(
c:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\urllib3\connectionpool.py:1097: InsecureRequestWarning: Unverified HTTPS request is being made to host 'huggingface.co'. Adding certificate verification is strongly advised. See: https://urllib3.readthedocs.io/en/latest/advanced-usage.html#tls-warnings
  warnings.warn(
Downloading 'tf_model.h5' to 'opus-mt-ru-en\.cache\huggingface\download\a7eHxRFT3OeMBIFg52k2nfj5m7w=.b3c90598b2fdba7dbb59374b067287284331ddb8b297ee0f3770279a6bf5ff86.incomplete'
Downloading 'generation_config.json' to 'opus-mt-ru-en\.cache\huggingface\download\3EVKVggOldJcKSsGjSdoUCN1AyQ=.73c009f373594622ab49464e9c3b4e950bc3ac2d.incomplete'
Xet Storage is enabled for this repo. Downloading file from Xet Storage..
c:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\urllib3\connectionpool.py:1097: InsecureRequestWarning: Unverified HTTPS request is being made to host 'huggingface.co'. Adding certificate verification is strongly advised. See: https://urllib3.readthedocs.io/en/latest/advanced-usage.html#tls-warnings
  warnings.warn(
c:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\urllib3\connectionpool.py:1097: InsecureRequestWarning: Unverified HTTPS request is being made to host 'huggingface.co'. Adding certificate verification is strongly advised. See: https://urllib3.readthedocs.io/en/latest/advanced-usage.html#tls-warnings
  warnings.warn(
Download complete. Moving file to opus-mt-ru-en\.gitattributes
Downloading 'README.md' to 'opus-mt-ru-en\.cache\huggingface\download\Xn7B-BWUGOee2Y6hCZtEhtFu4BE=.86bf639a37e88b6bbc32917fffb1b24c2ea609f9.incomplete'
c:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\urllib3\connectionpool.py:1097: InsecureRequestWarning: Unverified HTTPS request is being made to host 'huggingface.co'. Adding certificate verification is strongly advised. See: https://urllib3.readthedocs.io/en/latest/advanced-usage.html#tls-warnings
  warnings.warn(
Fetching 11 files:   9%|▉         | 1/11 [00:00<00:05,  1.75it/s]c:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\urllib3\connectionpool.py:1097: InsecureRequestWarning: Unverified HTTPS request is being made to host 'huggingface.co'. Adding certificate verification is strongly advised. See: https://urllib3.readthedocs.io/en/latest/advanced-usage.html#tls-warnings
  warnings.warn(
Download complete. Moving file to opus-mt-ru-en\generation_config.json
Download complete. Moving file to opus-mt-ru-en\README.md
c:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\urllib3\connectionpool.py:1097: InsecureRequestWarning: Unverified HTTPS request is being made to host 'huggingface.co'. Adding certificate verification is strongly advised. See: https://urllib3.readthedocs.io/en/latest/advanced-usage.html#tls-warnings
  warnings.warn(
c:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\urllib3\connectionpool.py:1097: InsecureRequestWarning: Unverified HTTPS request is being made to host 'huggingface.co'. Adding certificate verification is strongly advised. See: https://urllib3.readthedocs.io/en/latest/advanced-usage.html#tls-warnings
  warnings.warn(
Fetching 11 files:  36%|███▋      | 4/11 [00:35<01:02,  8.89s/it]
---------------------------------------------------------------------------
RuntimeError                              Traceback (most recent call last)
Cell In[1], line 37
     35 print(f"{ssl_context.check_hostname =}")
     36 # Download without SSL verification
---> 37 snapshot_download(
     38     repo_id="Helsinki-NLP/opus-mt-ru-en", # failed at Fetching 11 files:  36%|███▋      | 4/11 [00:33<00:57,  8.28s/it]
     39     # repo_id="google-t5/t5-base",  # failed at Fetching 11 files:  27%|██▋       | 3/11 [01:12<03:13, 24.18s/it]
     40     # repo_id="google-t5/t5-small", # failed atFetching 20 files:  15%|█▌        | 3/20 [01:05<06:13, 21.95s/it]
     41     local_dir="./opus-mt-ru-en"
     42 )

File c:\Usersmy_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\huggingface_hub\utils\_validators.py:114, in validate_hf_hub_args.<locals>._inner_fn(*args, **kwargs)
    111 if check_use_auth_token:
    112     kwargs = smoothly_deprecate_use_auth_token(fn_name=fn.__name__, has_token=has_token, kwargs=kwargs)
--> 114 return fn(*args, **kwargs)

File c:\Usersmy_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\huggingface_hub\_snapshot_download.py:332, in snapshot_download(repo_id, repo_type, revision, cache_dir, local_dir, library_name, library_version, user_agent, proxies, etag_timeout, force_download, token, local_files_only, allow_patterns, ignore_patterns, max_workers, tqdm_class, headers, endpoint, local_dir_use_symlinks, resume_download)
    330         _inner_hf_hub_download(file)
    331 else:
--> 332     thread_map(
    333         _inner_hf_hub_download,
    334         filtered_repo_files,
    335         desc=tqdm_desc,
    336         max_workers=max_workers,
    337         # User can use its own tqdm class or the default one from `huggingface_hub.utils`
    338         tqdm_class=tqdm_class or hf_tqdm,
    339     )
    341 if local_dir is not None:
    342     return str(os.path.realpath(local_dir))

File c:\Usersmy_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\tqdm\contrib\concurrent.py:69, in thread_map(fn, *iterables, **tqdm_kwargs)
     55 """
     56 Equivalent of `list(map(fn, *iterables))`
     57 driven by `concurrent.futures.ThreadPoolExecutor`.
   (...)     66     [default: max(32, cpu_count() + 4)].
     67 """
     68 from concurrent.futures import ThreadPoolExecutor
---> 69 return _executor_map(ThreadPoolExecutor, fn, *iterables, **tqdm_kwargs)

File c:\Usersmy_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\tqdm\contrib\concurrent.py:51, in _executor_map(PoolExecutor, fn, *iterables, **tqdm_kwargs)
     47 with ensure_lock(tqdm_class, lock_name=lock_name) as lk:
     48     # share lock in case workers are already using `tqdm`
     49     with PoolExecutor(max_workers=max_workers, initializer=tqdm_class.set_lock,
     50                       initargs=(lk,)) as ex:
---> 51         return list(tqdm_class(ex.map(fn, *iterables, chunksize=chunksize), **kwargs))

File c:\Usersmy_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\tqdm\std.py:1181, in tqdm.__iter__(self)
   1178 time = self._time
   1180 try:
-> 1181     for obj in iterable:
   1182         yield obj
   1183         # Update and possibly print the progressbar.
   1184         # Note: does not call self.update(1) for speed optimisation.

File c:\Usersmy_user\AppData\Local\anaconda3\envs\vdl\Lib\concurrent\futures\_base.py:619, in Executor.map.<locals>.result_iterator()
    616 while fs:
    617     # Careful not to keep a reference to the popped future
    618     if timeout is None:
--> 619         yield _result_or_cancel(fs.pop())
    620     else:
    621         yield _result_or_cancel(fs.pop(), end_time - time.monotonic())

File c:\Usersmy_user\AppData\Local\anaconda3\envs\vdl\Lib\concurrent\futures\_base.py:317, in _result_or_cancel(***failed resolving arguments***)
    315 try:
    316     try:
--> 317         return fut.result(timeout)
    318     finally:
    319         fut.cancel()

File c:\Usersmy_user\AppData\Local\anaconda3\envs\vdl\Lib\concurrent\futures\_base.py:456, in Future.result(self, timeout)
    454     raise CancelledError()
    455 elif self._state == FINISHED:
--> 456     return self.__get_result()
    457 else:
    458     raise TimeoutError()

File c:\Usersmy_user\AppData\Local\anaconda3\envs\vdl\Lib\concurrent\futures\_base.py:401, in Future.__get_result(self)
    399 if self._exception:
    400     try:
--> 401         raise self._exception
    402     finally:
    403         # Break a reference cycle with the exception in self._exception
    404         self = None

File c:\Usersmy_user\AppData\Local\anaconda3\envs\vdl\Lib\concurrent\futures\thread.py:58, in _WorkItem.run(self)
     55     return
     57 try:
---> 58     result = self.fn(*self.args, **self.kwargs)
     59 except BaseException as exc:
     60     self.future.set_exception(exc)

File c:\Usersmy_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\huggingface_hub\_snapshot_download.py:306, in snapshot_download.<locals>._inner_hf_hub_download(repo_file)
    305 def _inner_hf_hub_download(repo_file: str):
--> 306     return hf_hub_download(
    307         repo_id,
    308         filename=repo_file,
    309         repo_type=repo_type,
    310         revision=commit_hash,
    311         endpoint=endpoint,
    312         cache_dir=cache_dir,
    313         local_dir=local_dir,
    314         local_dir_use_symlinks=local_dir_use_symlinks,
    315         library_name=library_name,
    316         library_version=library_version,
    317         user_agent=user_agent,
    318         proxies=proxies,
    319         etag_timeout=etag_timeout,
    320         resume_download=resume_download,
    321         force_download=force_download,
    322         token=token,
    323         headers=headers,
    324     )

File c:\Usersmy_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\huggingface_hub\utils\_validators.py:114, in validate_hf_hub_args.<locals>._inner_fn(*args, **kwargs)
    111 if check_use_auth_token:
    112     kwargs = smoothly_deprecate_use_auth_token(fn_name=fn.__name__, has_token=has_token, kwargs=kwargs)
--> 114 return fn(*args, **kwargs)

File c:\Usersmy_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\huggingface_hub\file_download.py:990, in hf_hub_download(repo_id, filename, subfolder, repo_type, revision, library_name, library_version, cache_dir, local_dir, user_agent, force_download, proxies, etag_timeout, token, local_files_only, headers, endpoint, resume_download, force_filename, local_dir_use_symlinks)
    981     if local_dir_use_symlinks != "auto":
    982         warnings.warn(
    983             "`local_dir_use_symlinks` parameter is deprecated and will be ignored. "
    984             "The process to download files to a local folder has been updated and do "
   (...)    987             "For more details, check out https://huggingface.co/docs/huggingface_hub/main/en/guides/download#download-files-to-local-folder."
    988         )
--> 990     return _hf_hub_download_to_local_dir(
    991         # Destination
    992         local_dir=local_dir,
    993         # File info
    994         repo_id=repo_id,
    995         repo_type=repo_type,
    996         filename=filename,
    997         revision=revision,
    998         # HTTP info
    999         endpoint=endpoint,
   1000         etag_timeout=etag_timeout,
   1001         headers=hf_headers,
   1002         proxies=proxies,
   1003         token=token,
   1004         # Additional options
   1005         cache_dir=cache_dir,
   1006         force_download=force_download,
   1007         local_files_only=local_files_only,
   1008     )
   1009 else:
   1010     return _hf_hub_download_to_cache_dir(
   1011         # Destination
   1012         cache_dir=cache_dir,
   (...)   1026         force_download=force_download,
   1027     )

File c:\Usersmy_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\huggingface_hub\file_download.py:1300, in _hf_hub_download_to_local_dir(local_dir, repo_id, repo_type, filename, revision, endpoint, etag_timeout, headers, proxies, token, cache_dir, force_download, local_files_only)
   1298 with WeakFileLock(paths.lock_path):
   1299     paths.file_path.unlink(missing_ok=True)  # delete outdated file first
-> 1300     _download_to_tmp_and_move(
   1301         incomplete_path=paths.incomplete_path(etag),
   1302         destination_path=paths.file_path,
   1303         url_to_download=url_to_download,
   1304         proxies=proxies,
   1305         headers=headers,
   1306         expected_size=expected_size,
   1307         filename=filename,
   1308         force_download=force_download,
   1309         etag=etag,
   1310         xet_file_data=xet_file_data,
   1311     )
   1313 write_download_metadata(local_dir=local_dir, filename=filename, commit_hash=commit_hash, etag=etag)
   1314 return str(paths.file_path)

File c:\Usersmy_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\huggingface_hub\file_download.py:1723, in _download_to_tmp_and_move(incomplete_path, destination_path, url_to_download, proxies, headers, expected_size, filename, force_download, etag, xet_file_data)
   1721 if xet_file_data is not None and is_xet_available():
   1722     logger.debug("Xet Storage is enabled for this repo. Downloading file from Xet Storage..")
-> 1723     xet_get(
   1724         incomplete_path=incomplete_path,
   1725         xet_file_data=xet_file_data,
   1726         headers=headers,
   1727         expected_size=expected_size,
   1728         displayed_filename=filename,
   1729     )
   1730 else:
   1731     if xet_file_data is not None and not constants.HF_HUB_DISABLE_XET:

File c:\Usersmy_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\huggingface_hub\file_download.py:629, in xet_get(incomplete_path, xet_file_data, headers, expected_size, displayed_filename, _tqdm_bar)
    626 def progress_updater(progress_bytes: float):
    627     progress.update(progress_bytes)
--> 629 download_files(
    630     xet_download_info,
    631     endpoint=connection_info.endpoint,
    632     token_info=(connection_info.access_token, connection_info.expiration_unix_epoch),
    633     token_refresher=token_refresher,
    634     progress_updater=[progress_updater],
    635 )

RuntimeError: Data processing error: CAS service error : ReqwestMiddleware Error: Request failed after 5 retries

System info

- huggingface_hub version: 0.35.3
- Platform: Windows-10-10.0.19045-SP0
- Python version: 3.11.13
- Running in iPython ?: Yes
- iPython shell: ZMQInteractiveShell
- Running in notebook ?: Yes
- Running in Google Colab ?: No
- Running in Google Colab Enterprise ?: No
- Token path ?: C:\Users\my_user\.cache\huggingface\token
- Has saved token ?: False
- FastAI: N/A
- Tensorflow: N/A
- Torch: 2.5.1
- Jinja2: 3.1.6
- Graphviz: N/A
- keras: N/A
- Pydot: N/A
- Pillow: 11.1.0
- hf_transfer: N/A
- gradio: N/A
- tensorboard: N/A
- numpy: 2.0.1
- pydantic: 2.11.9
- aiohttp: 3.12.15
- hf_xet: 1.1.8
- ENDPOINT: https://huggingface.co
- HF_HUB_CACHE: C:\Users\my_user\.cache\huggingface\hub
- HF_ASSETS_CACHE: C:\Users\my_user\.cache\huggingface\assets
- HF_TOKEN_PATH: C:\Users\my_user\.cache\huggingface\token
- HF_STORED_TOKENS_PATH: C:\Users\my_user\.cache\huggingface\stored_tokens
- HF_HUB_OFFLINE: False
- HF_HUB_DISABLE_TELEMETRY: False
- HF_HUB_DISABLE_PROGRESS_BARS: False
- HF_HUB_DISABLE_SYMLINKS_WARNING: True
- HF_HUB_DISABLE_EXPERIMENTAL_WARNING: False
- HF_HUB_DISABLE_IMPLICIT_TOKEN: False
- HF_HUB_DISABLE_XET: False
- HF_HUB_ENABLE_HF_TRANSFER: False
- HF_HUB_ETAG_TIMEOUT: 10
- HF_HUB_DOWNLOAD_TIMEOUT: 120

[satyrmipt]

I also tried to use hf download right after i run the script above. All the variables are the same. Full log for

!hf download --repo-type model Helsinki-NLP/opus-mt-ru-en --local-dir ./opus-mt-ru-en

is

Traceback (most recent call last):
File "C:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\urllib3\connectionpool.py", line 464, in _make_request
self._validate_conn(conn)
File "C:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\urllib3\connectionpool.py", line 1093, in _validate_conn
conn.connect()
File "C:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\urllib3\connection.py", line 790, in connect
sock_and_verified = _ssl_wrap_socket_and_match_hostname(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\urllib3\connection.py", line 969, in ssl_wrap_socket_and_match_hostname
ssl_sock = ssl_wrap_socket(
^^^^^^^^^^^^^^^^
File "C:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\urllib3\util\ssl.py", line 480, in ssl_wrap_socket
ssl_sock = ssl_wrap_socket_impl(sock, context, tls_in_tls, server_hostname)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\urllib3\util\ssl.py", line 524, in _ssl_wrap_socket_impl
return ssl_context.wrap_socket(sock, server_hostname=server_hostname)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Lib\ssl.py", line 517, in wrap_socket
return self.sslsocket_class._create(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Lib\ssl.py", line 1104, in _create
self.do_handshake()
File "C:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Lib\ssl.py", line 1382, in do_handshake
self._sslobj.do_handshake()
ssl.SSLCertVerificationError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: self-signed certificate in certificate chain (_ssl.c:1016)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "C:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\urllib3\connectionpool.py", line 787, in urlopen
response = self._make_request(
^^^^^^^^^^^^^^^^^^^
File "C:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\urllib3\connectionpool.py", line 488, in _make_request
raise new_e
urllib3.exceptions.SSLError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: self-signed certificate in certificate chain (_ssl.c:1016)

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
File "C:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\requests\adapters.py", line 644, in send
resp = conn.urlopen(
^^^^^^^^^^^^^
File "C:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\urllib3\connectionpool.py", line 841, in urlopen
retries = retries.increment(
^^^^^^^^^^^^^^^^^^
File "C:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\urllib3\util\retry.py", line 519, in increment
raise MaxRetryError(_pool, url, reason) from reason # type: ignore[arg-type]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
urllib3.exceptions.MaxRetryError: HTTPSConnectionPool(host='huggingface.co', port=443): Max retries exceeded with url: /api/models/Helsinki-NLP/opus-mt-ru-en/revision/main (Caused by SSLError(SSLCertVerificationError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: self-signed certificate in certificate chain (_ssl.c:1016)')))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "C:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Scripts\hf-script.py", line 9, in
sys.exit(main())
^^^^^^
File "C:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\huggingface_hub\cli\hf.py", line 59, in main
service.run()
File "C:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\huggingface_hub\cli\download.py", line 136, in run
print(self._download()) # Print path to downloaded files
^^^^^^^^^^^^^^^^
File "C:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\huggingface_hub\cli\download.py", line 169, in _download
return snapshot_download(
^^^^^^^^^^^^^^^^^^
File "C:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\huggingface_hub\utils_validators.py", line 114, in _inner_fn
return fn(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^
File "C:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\huggingface_hub_snapshot_download.py", line 165, in snapshot_download
repo_info = api.repo_info(repo_id=repo_id, repo_type=repo_type, revision=revision)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\huggingface_hub\utils_validators.py", line 114, in _inner_fn
return fn(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^
File "C:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\huggingface_hub\hf_api.py", line 2864, in repo_info
return method(
^^^^^^^
File "C:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\huggingface_hub\utils_validators.py", line 114, in _inner_fn
return fn(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^
File "C:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\huggingface_hub\hf_api.py", line 2648, in model_info
r = get_session().get(path, headers=headers, timeout=timeout, params=params)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\requests\sessions.py", line 602, in get
return self.request("GET", url, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\requests\sessions.py", line 589, in request
resp = self.send(prep, **send_kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\requests\sessions.py", line 703, in send
r = adapter.send(request, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\huggingface_hub\utils_http.py", line 95, in send
return super().send(request, *args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\my_user\AppData\Local\anaconda3\envs\vdl\Lib\site-packages\requests\adapters.py", line 675, in send
raise SSLError(e, request=request)
requests.exceptions.SSLError: (MaxRetryError("HTTPSConnectionPool(host='huggingface.co', port=443): Max retries exceeded with url: /api/models/Helsinki-NLP/opus-mt-ru-en/revision/main (Caused by SSLError(SSLCertVerificationError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: self-signed certificate in certificate chain (_ssl.c:1016)')))"), '(Request ID: 9934ac4d-3dd6-4e47-a837-e4bde11ec71e)')

[hanouticelina]

Hi @satyrmipt,
Sorry about the inconvenience. Could you retry by configuring the HTTP proxy with the environment variables HTTP_PROXY and HTTPS_PROXY (instead of using configure_http_backend) and let us know if that fixes your issue?

Pinging @bpronan @rajatarya @seanses

[seanses]

@satyrmipt I think the error message "[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: self-signed certificate in certificate chain" indicates a cert chain verification failure. Can you check if you have the root certificate "Amazon Root CA 1" or "Starfield Services Root Certificate Authority - G2" installed on your Windows?