Oc client on Windows - TLS issue

Expected behaviour

Connect to oc server, configure account successfully

Actual behaviour

TLS connection to server can not be established

Steps to reproduce

  1. Enter server URL -> timeout occurs (any browser is able to connect to targeted oc server successfully on affected notebook
  2. Issue can be reproduced by means of wget too, which seems to use the same network component as oc client

Server configuration

not affected (because from any other client synchronisation works well)

Client configuration

Client version: 2.5.2 (Build 11181)

Operating system:
Windows 10 Enterprise

OS language:
German

Qt version used by client package (Linux only, see also Settings dialog):

Client package (From ownCloud or distro) (Linux only):

Installation path of client: C:\Program Files (x86)\ownCloud

Logs

  1. Client logfile: Output of owncloud --logwindow or owncloud --logfile log.txt:

07-19 14:30:35:043 [ info gui.application ]: “################## ownCloud locale:[de_DE] ui_lang:[de_DE] version:[2.5.2 (build 11181)] os:[Windows 10 (10.0)]”
07-19 14:30:45:212 [ info sync.accessmanager ]: 2 “” “https:///owncloud/status.php” has X-Request-ID “de30150e-cb9b-48c7-885c-64d83cf4899d”
07-19 14:30:45:212 [ info sync.networkjob ]: OCC::CheckServerJob created for “” + “status.php” “OCC::OwncloudSetupWizard”
07-19 14:31:15:216 [ warning sync.networkjob ]: Network job timeout QUrl(" status.php")
07-19 14:31:15:216 [ warning sync.networkjob.checkserver ]: TIMEOUT
07-19 14:31:16:451 [ info gui.socketapi ]: New connection QLocalSocket(0x8468000)
07-19 14:31:16:467 [ info gui.socketapi ]: Received SocketAPI message <-- “GET_STRINGS:CONTEXT_MENU_TITLE” from QLocalSocket(0x8468000)
07-19 14:31:16:467 [ info gui.socketapi ]: Sending SocketAPI message --> “GET_STRINGS:BEGIN” to QLocalSocket(0x8468000)
07-19 14:31:16:467 [ info gui.socketapi ]: Sending SocketAPI message --> “STRING:CONTEXT_MENU_TITLE:ownCloud” to QLocalSocket(0x8468000)
07-19 14:31:16:467 [ info gui.socketapi ]: Sending SocketAPI message --> “GET_STRINGS:END” to QLocalSocket(0x8468000)
07-19 14:31:16:467 [ info gui.socketapi ]: Received SocketAPI message <-- “GET_MENU_ITEMS:C:\Users\upek7gq\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\File Explorer.lnk” from QLocalSocket(0x8468000)
07-19 14:31:16:467 [ info gui.socketapi ]: Sending SocketAPI message --> “GET_MENU_ITEMS:BEGIN” to QLocalSocket(0x8468000)
07-19 14:31:16:467 [ info gui.socketapi ]: Sending SocketAPI message --> “GET_MENU_ITEMS:END” to QLocalSocket(0x8468000)
07-19 14:31:16:529 [ info gui.socketapi ]: Lost connection QLocalSocket(0x8468000)

  1. Web server error log:
    not any connection received by client

  2. Server logfile: ownCloud log (data/owncloud.log):
    n/a

Expected Feedback:

What network components does oc client use on a Windows 10 machine to connect to an oc server by TLS (SSL)? E.g. winsock, SCHANNEL etc. Alternatively: In what source file will I find related code for establishing a TLS connection?

Have you tried changing the proxy settings in the client configuration dialog?

Most likely your browser is using a system proxy.

Yes, and I got access to proxy unauthenticated too. - But as I wrote above I don’t assume a misbehavior of oc client, I just expect any hints where to search on affected machine for a possible root cause.

Did you see, that your server-URL is missing here? Why?

Sorry for this confusion: It’s a private server (but secured by a Rapid SSL public certificate), so I have masked it! Server endpoint can be excluded definitely, because reachable from any other desktop or mobile device without any issue.