Space creation fails mysteriously

[Erkki_Aalto]

We have a test system with 5.5.7. An attempt to create space fails with error message 'Your session has expired. Please reload the page to try again.'. In two other systems that should be identical everything works fine. Any ideas on  what is corrupt?

[Erkki_Aalto · Accepted solution]

I found the problem. It was in Apache configs, not in Confluence; an extra proxypass directive in the problem server.

[Erkki_Aalto]

Now it seems, that the plugin system is somehow corrupt: I get messages

The Atlassian Marketplace server is not reachable. To avoid problems when loading this page, you can disable the connection to the Marketplace server

An unexpected error occurred. Refer to the logs for more information.

Deleting the plugin caches did not help.

[Alejandro Conde Carrillo]

Are you logged in in any other service which uses the same URL but different port? You may be facing this problem: Logging into Another Atlassian Application Logs Me Out of Confluence. Please note this may also happen for other non Atlassian applications.