Some Antivirus engines need to be told to EXCLUDE some PolicyPak items.
PolicyPak acts as part of the operating system, and as such, can occasionally conflict with SOME Antivirus programs.
We suggest if you find a problem to exclude
PPWatcherSvc*.exe (with * being either the 32- or 64-bit version)
which could be blocked and prevented from performing its job.
You might need to further expand the exclusion to
c:\program files (x86)\PolicyPak
To cover all the bases.