Anything in the Event Viewer? Seems like the Service is attempting to stop the scanner and the Access Protection isn't letting it.
System Event Viewer is clean and Application Event Log only shows the McLogEvent saying that the action was blocked.
I have the same problem on Windows 7 (different PCs, looks like all Windows 7 64Bit)
CcmExec.exe (MC SCCM)
Prevent termination of McAfee processes: x64\McShield.exe, naPrdMgr.exe, VsTskMgr.exe, McScript_InUse.exe, FrameworkService.exe, ShStat.exe ...
McAfee Agent 188.8.131.524, Product Coverage Reports 184.108.40.2064, VirusScan Enterprise 220.127.116.110.Wrk, AntiSpyware 18.104.22.168
PS: 10 895 warnings last 24H