Prevx3 v18.104.22.168 running on XP Pro. Recently, each time I boot up, Prevx pops up saying that it is about to expire (there's about 300 days on the multi-user licence) also the Windows security centre warns that Prevx2 sic is turned off. The licence warning then disappears, but the Security centre warn remains. Prevx appears to then run fine & the Prevx task is in the task manager. My other Prevx licences running on Windows 7 do not have an issue with the licence.