• This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn more.

XF 1.2 Unable to edit users whose username contains an apostrophe


Well-known member
Xenforo 1.2.0

This is odd, but when I try to edit a user whose username contains an apostrophe I get an error:

The following error occurred:
You don't have permission to access /admin.php on this server.
Yet I can edit users without apostrophes (even those containing other non-alphanumeric characters) without any such error.


Well-known member
I'll have to check, but it's a new error for me on the same old installation.

I'm pretty sure it isn't a browser, O/S or network issue, as I've replicated it in different browsers on different machines and different networks.


XenForo developer
Staff member
Almost certainly a mod_security-type issue. Hopefully there will be more information in the server error log (not XenForo's). You may need to contact your host.