This fix was tested with Windows XP Pro SP3 with Office 2003 SP3 and McAfee AntiVirus Plus. Finally. Finally I found a solution for this really scary-looking error message that was bugging me since 12/24. Marry Christmas! Description of a Problem Every time you restart you PC you see a very unpleasant Warning Event ID 516 in your system event log from mfehidk. This is the very last system message before computer reboots or goes to sleep. Process **\MCSHIELD.EXE pid (864) contains signed but untrusted code, but was allowed to perform a privileged operation with a McAfee driver. What is Causing it? It appears that most people (and I join them) …