XPERIA M - setting menu got locked automatically

[prakash-ranjan]

Hi,I have xperia M handset.Its setting menu got locked automatically without applying any app lock or anything. Now its not opening and askin seciruty password to just open setting menu.I am not able to handle any settings. In mid waysometimes it opens and again after some time it’s asking security code. Pease give me solution as early as possible

[Uliwooly]

Do you have mcafee? I've seen this before and the issue was that the user set a password with an antivirus app