Error with WinClient


from one to another day I received an error message from Windows Client. See below. I deleted this account and added it again even with clean sync option error came back again.
All other sync accounts are running normally.

26.04.2017 22:16:07,                             GC/80-Tage-Finalvorbereitung-06.xls, E:\DATEN\CLOUD SPEICHER\homer,Error transferring - server replied: Service Unavailable
26.04.2017 22:16:07,                                            Fond Berechnung.xlsx, E:\DATEN\CLOUD SPEICHER\homer,Error transferring Berechnung.xlsx - server replied: Internal Server Error

Please fill out the issue template below (which is shown when creating a new thread in this category and as already pointed out in some of your previous threads). Currently even the basic information are missing which are mandatory to help here.

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[b]Steps to reproduce[/b]

[b]Expected behaviour[/b]
Tell us what should happen

[b]Actual behaviour[/b]
Tell us what happens instead

[b]Client configuration[/b]
Client version:
Client operating system:

[b]Server configuration[/b]
Operating system:
Web server:
PHP version:
ownCloud version (see ownCloud admin page):
Updated from an older ownCloud or fresh install:
Special configurations (external storage, external authentication, reverse proxy, server-side-encryption):

[b]ownCloud log (data/owncloud.log)[/b]

Please paste possible errors in the following code block, see for more info


The error message indicates a problem on your server. Check the apache error log there first, maybe you see the problem immediately.