[eGroupWare-users] Endless loop after login

[S. S. <acc...@se...>]

Hello,

after the last update of the egroupware (deb packages) to version 
16.1.20170922 we are unable to log into the website anymore.
Multiple users are affected.

After Login the browser goes into an endless loop reloading the 
following to urls again and again. Login/logout does not help. Manually 
changing the url to /egroupware/index.php des not help either...

https://server/egroupware/index.php?cd=yes

https://server/egroupware/index.php?menuaction=calendar.calendar_uiviews.index&ajax=true

https://server/egroupware/index.php?cd=yes

https://server/egroupware/index.php?menuaction=calendar.calendar_uiviews.index&ajax=true

https://server/egroupware/index.php?cd=yes

https://server/egroupware/index.php?menuaction=calendar.calendar_uiviews.index&ajax=true

...

And then after dozen of reloads a red framed error is shown by the 
website with:

===
"A request to the EGroupware server returned with an error: error (0)

Please reload the EGroupware desktop (F5 / Cmd+r).
If the error persists, contact your administrator for help and ask to 
check the error-log of the webserver.

URL: 
/egroupware/json.php?menuaction=calendar.jdots_framework.ajax_exec.template
===

Someone having an idea whats going on?"



Thanks in advance,
Stefan Seide