PermissionError: [Errno 13] error while attempting to bind on address ('127.0.0.1', 55400)

[DatN132]

Hello. Everything was working fine until a couple of days ago when this error suddenly popped up

Traceback (most recent call last): File "D:\a\chia-blockchain\chia-blockchain\chia\cmds\chia.py", line 154, in <module> File "D:\a\chia-blockchain\chia-blockchain\chia\cmds\chia.py", line 150, in main File "click\core.py", line 829, in __call__ File "click\core.py", line 782, in main File "click\core.py", line 1259, in invoke File "click\core.py", line 1066, in invoke File "click\core.py", line 610, in invoke File "click\decorators.py", line 21, in new_func File "D:\a\chia-blockchain\chia-blockchain\chia\cmds\chia.py", line 126, in run_daemon_cmd File "asyncio\runners.py", line 44, in run File "asyncio\base_events.py", line 647, in run_until_complete File "chia\daemon\server.py", line 1418, in async_run_daemon File "chia\daemon\server.py", line 199, in start File "aiohttp\web_runner.py", line 121, in start File "asyncio\base_events.py", line 1506, in create_server PermissionError: [Errno 13] error while attempting to bind on address ('127.0.0.1', 55400): an attempt was made to access a socket in a way forbidden by its access permissions [26488] Failed to execute script 'chia' due to unhandled exception!

The gui just load infinitely, while CLI shows an exception
I read a couple of threads online and tried changing the localhost in config.yaml to 127.0.0.1, but the same error happens. I also ran netstat to see if there are any other applications that are using the port 55400, but I found that 55400 is not in used. I tried running powershell as admin and running GUI as admin, but that didn't help either. As a last resort, I turned off windows defender, but that didn't help either.

Any feedback would be appreciated. Thanks

[DatN132]

Quick update: Since the Flax (XFX) project is based on Chia, I tried installing it, and it is running fine

[DatN132]

okay, so installing 1.3.5 works. 1.4.0 doesn't work for me for unknown reasons. Cheers!

[loppefaaret]

when you start any chia service, or the chia client, it will first start a daemon service, that is controlling the other services... this daemon service is using local port 55400 to communicate with the other services - something else (likely a previous daemon service that is stuck) has already reserved local port 55400, so when you tried starting it above, the OS rejected the process request for control over that specific port... try a reboot