webapp Http Error 400 after updating

I just updated my UBUNTU 14.04 Server to newest Kopano 8.5
Now webapp is not reachable. I get HTTP error 400 Bad Request

Kopano server is running .
During update I saw no errors…

Any help / Idea

Thanks bskoeln

In apache2 error log i get

rejected insecure request as configuration for insecure cookies is false…


Sorry …my mistake…
I didnt use HTTPS…
funny result


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