XF 1.5 Problem with user accounts

[DeeGee]

Hello guys,

I have a huge problem with my forum.
After I moved to a new Hoster and imported the backup users randomly are logged in into accounts from other users.
This happens if I just go to my website (forum) and I'm logged into anyone's account (randomly).
I don't even used the login.
I don't know why this happens.
Maybe I need to reinstall the whole forum or clear the cache.

Would be nice if you can help me with this problem.

Best regards,
DeeGee

 

[TPerry]

Check and see if the hosting provider is running any reverse proxy or caching.

https://xenforo.com/community/threads/possible-security-issue.112813/