XF 1.4 Disable user signatures

The ability to edit a signature is permission controlled.

Revoke it for the users/groups you don't want to have that ability.

The Batch Update Users function can be used to mass remove existing signatures, or for individual users, edit their profile in the ACP.
 
Except that is not what the user requested as that does not disable signatures. Please avoid suggesting something that is not what the user asked for and is unnecessary.
 
Top Bottom