Windows client synchronizing error

[fion-private]

Hello everyone,

I'm having trouble synchronizing my personal space with the Windows client. I set up OpenCloud last week, and the synchronization worked perfectly for a few days. Since yesterday, the Windows client has been showing the following error:

Aborted: Server responded with an error reading the directory... Server error: PROPFIND response is not in XML format!

The folder where the error occurs is always different. I have another space, and this one synchronizes without any problems. Another user on a different Windows client also synchronizes without any issues.

Does anyone know what this error means and what I need to do?

Thanks in advance!

[micbar]

Looks like something is wrong with the opencloud server. Can you collect some server logs and try to trigger the error again?

Then we can see what is happening also in the server.

@TheOneRing @dragotin @dragonchaser

[fion-private]

I restarted the Docker container and immediately received these log entries:

opencloud | 2026/01/12 08:01:38 Could not create config: config file already exists, use --force-overwrite to overwrite or --diff to show diff
opencloud | {"level":"error","error":"error connecting to nats cluster opencloud-cluster: error connecting to nats at 127.0.0.1:9233 with tls enabled (false): nats: no servers available for connection","time":"2026-01-12T08:01:39Z","caller":"github.com/cenkalti/backoff@v2.2.1+incompatible/retry.go:24","message":"can't connect to nats (jetstream) server, retrying in 1.303196524s"}
opencloud | {"level":"error","service":"storage-users","host.name":"4ca739b3bbc2","pkg":"rgrpc","driver":"posix","error":"EOF","spaceID":"4e11baa4-886e-414c-99c8-8b6bd711e9bd","time":"2026-01-12T08:02:00Z","message":"trashbin: error reading trash directory"}
opencloud | {"level":"error","service":"storage-users","host.name":"4ca739b3bbc2","pkg":"rgrpc","driver":"posix","error":"EOF","spaceID":"ddba230e-e170-44e9-8ddb-85305467f982","time":"2026-01-12T08:02:00Z","message":"trashbin: error reading trash directory"}

After the synchronization started and the sync error occurred, these log entries appeared:

opencloud | {"level":"error","service":"proxy","remoteAddr":"192.168.0.135","request-id":"fd7d569b-54e5-401c-a31d-efd98efb7eec","proto":"HTTP/1.1","method":"PROPFIND","path":"/dav/spaces/e2793c6d-dde2-480c-b6d6-45d796d6d58e$4e11baa4-886e-414c-99c8-8b6bd711e9bd/my/local/path","query":"","fragment":"","error":"context canceled","time":"2026-01-12T08:02:23Z","message":"error happened in MultiHostReverseProxy"}
opencloud | {"level":"error","service":"proxy","remoteAddr":"192.168.0.135","request-id":"5c066b6a-bc8f-4ae3-ae22-87b18a4cc278","proto":"HTTP/1.1","method":"PROPFIND","path":"/dav/spaces/e2793c6d-dde2-480c-b6d6-45d796d6d58e$4e11baa4-886e-414c-99c8-8b6bd711e9bd//my/local/path2","query":"","fragment":"","error":"context canceled","time":"2026-01-12T08:02:23Z","message":"error happened in MultiHostReverseProxy"}
opencloud | {"level":"error","service":"ocdav","name":"eu.opencloud.web.ocdav","traceid":"c4210cb69f5c7d9c40ead0b45c251898","request-id":"fd7d569b-54e5-401c-a31d-efd98efb7eec","path":"/my/local/path","spaceid":"e2793c6d-dde2-480c-b6d6-45d796d6d58e$4e11baa4-886e-414c-99c8-8b6bd711e9bd","error":"rpc error: code = Canceled desc = context canceled","time":"2026-01-12T08:02:23Z","message":"propfindResponse: couldn't list public shares"}
opencloud | {"level":"error","service":"ocdav","name":"eu.opencloud.web.ocdav","traceid":"25f0e7ffdc517cadba3fd7741ad629dc","request-id":"5c066b6a-bc8f-4ae3-ae22-87b18a4cc278","path":"/my/local/path2","spaceid":"e2793c6d-dde2-480c-b6d6-45d796d6d58e$4e11baa4-886e-414c-99c8-8b6bd711e9bd","error":"rpc error: code = Canceled desc = context canceled","time":"2026-01-12T08:02:23Z","message":"propfindResponse: couldn't list public shares"}
opencloud | {"level":"error","service":"ocdav","name":"eu.opencloud.web.ocdav","traceid":"c4210cb69f5c7d9c40ead0b45c251898","request-id":"fd7d569b-54e5-401c-a31d-efd98efb7eec","path":"/my/local/path","spaceid":"e2793c6d-dde2-480c-b6d6-45d796d6d58e$4e11baa4-886e-414c-99c8-8b6bd711e9bd","error":"context canceled","time":"2026-01-12T08:02:23Z","message":"error formatting propfind"}
opencloud | {"level":"error","service":"gateway","host.name":"4ca739b3bbc2","pkg":"rgrpc","traceid":"25f0e7ffdc517cadba3fd7741ad629dc","user-agent":"Mozilla/5.0 (Windows) mirall/3.0.3.2073 (OpenCloud, windows-10.0.26200 ClientArchitecture: x86_64 OsArchitecture: x86_64)","from":"tcp://172.19.0.2:47002","uri":"/cs3.gateway.v1beta1.GatewayAPI/ListPublicShares","start":"12/Jan/2026:08:02:23 +0000","end":"12/Jan/2026:08:02:23 +0000","time_ns":8286124,"code":"Canceled","time":"2026-01-12T08:02:23Z","message":"error listing shares: rpc error: code = Canceled desc = context canceled"}
opencloud | {"level":"error","service":"ocdav","name":"eu.opencloud.web.ocdav","traceid":"25f0e7ffdc517cadba3fd7741ad629dc","request-id":"5c066b6a-bc8f-4ae3-ae22-87b18a4cc278","path":"/my/local/path","spaceid":"e2793c6d-dde2-480c-b6d6-45d796d6d58e$4e11baa4-886e-414c-99c8-8b6bd711e9bd","error":"context canceled","time":"2026-01-12T08:02:23Z","message":"error formatting propfind"}
opencloud | {"level":"error","service":"gateway","host.name":"4ca739b3bbc2","pkg":"rgrpc","traceid":"c4210cb69f5c7d9c40ead0b45c251898","user-agent":"Mozilla/5.0 (Windows) mirall/3.0.3.2073 (OpenCloud, windows-10.0.26200 ClientArchitecture: x86_64 OsArchitecture: x86_64)","from":"tcp://172.19.0.2:47002","uri":"/cs3.gateway.v1beta1.GatewayAPI/ListPublicShares","start":"12/Jan/2026:08:02:23 +0000","end":"12/Jan/2026:08:02:23 +0000","time_ns":8120218,"code":"Canceled","time":"2026-01-12T08:02:23Z","message":"error listing shares: rpc error: code = Canceled desc = context canceled"}
opencloud | {"level":"error","service":"storage-users","host.name":"4ca739b3bbc2","pkg":"rgrpc","driver":"posix","error":"EOF","spaceID":"4e11baa4-886e-414c-99c8-8b6bd711e9bd","time":"2026-01-12T08:02:30Z","message":"trashbin: error reading trash directory"}
opencloud | {"level":"error","service":"storage-users","host.name":"4ca739b3bbc2","pkg":"rgrpc","driver":"posix","error":"EOF","spaceID":"ddba230e-e170-44e9-8ddb-85305467f982","time":"2026-01-12T08:02:30Z","message":"trashbin: error reading trash directory"}
opencloud | {"level":"error","service":"storage-users","host.name":"4ca739b3bbc2","pkg":"rgrpc","driver":"posix","error":"EOF","spaceID":"4e11baa4-886e-414c-99c8-8b6bd711e9bd","time":"2026-01-12T08:03:00Z","message":"trashbin: error reading trash directory"}
opencloud | {"level":"error","service":"storage-users","host.name":"4ca739b3bbc2","pkg":"rgrpc","driver":"posix","error":"EOF","spaceID":"ddba230e-e170-44e9-8ddb-85305467f982","time":"2026-01-12T08:03:00Z","message":"trashbin: error reading trash directory"}

[micbar]

Wow! So many errors. Context cancelled means that something in between the client and the server cuts the connection.

Could be related to reverse proxy or network problem.

[TheOneRing]

Sounds like opencloud-eu/desktop#685 which is a Nginx config issue.

[fion-private]

I'm using NPM as a reverse proxy. The fix in post #685 resolved the issue.

Thank you!

[micbar]

@Svanvith @ScharfViktor another important docs issue.

[ScharfViktor]

I understand that we don't need to add anything to the documentation because this fix:

keepalive_requests 100000;
keepalive_timeout 5m;
http2_max_concurrent_streams 512;

is already there:
https://docs.opencloud.eu/docs/next/admin/getting-started/container/docker-compose/external-proxy#create-a-new-proxy-config