Server issue Batch update users - Security error occured


Well-known member

in ACP when select Users => Batch update users and when you select filters, after results are shown, if I click on link View or filter matches and make selection (or not make any changes) and than click on button Batch Update Selected then this error happened. If I go back and click refresh, still same error after clicking on button Batch Update Selected

Interesting is that this errors show up when many members are listed in result (600+)

I use XenForo 1.4.0 (with security patch file), also error shws with all add-ons disabled. I have only default style.


Chris D

XenForo developer
Staff member
This is actually more than likely to be a PHP config issue.

Most likely culprit is max_input_vars

Try to increase that in php.ini. I think the default is 1000. Try setting it to 10000, restart PHP and try again.