XF 1.5 Sudden Logouts


Active member

some of our users are being logged off from XenForo sometimes when they browse our forum, although the repeatedly clicked "stay logged in". For example when they open a new window with a right click.

Any ideas? Thank you in advance!

Kind regards,


Well-known member
They use Firefox. One user states it might be a problem with HTML5 canvas image data for identification.

Yes, no problem.
What Steve F means do www.yoursite.com and yoursite.com separately exist, or does one redirect to the other (e.g. www.yoursite.com redirects to yoursite.com or vice versa)?

If they separately exist (and I suspect this is the case) then you need to decide which one you want to use (either the www or non-www one) and set it so that the one you don't use redirects to the other one. See point 19 of the FAQ on how to do this.



Active member
Thank you very much.

I am using the www.yoursite.com, which is configured in XenForo. There is also a webserver configuration for yoursite.com which leads to the following htacces file =>

RewriteEngine On
RewriteRule ^(.*)$ http://www.yoursite.com/$1 [R=301,L]
RewriteRule .+ http://www.yoursite.com/ [R=301,L]


Well-known member
As it says in point 19 of the FAQ that I linked to:

Note that all servers are different and you may have to try several variations until you find one which works.
You'll therefore need to try the how to force www examples in that FAQ point until you find one that works for you.