Removing Administrator Privilages from Process
With the help of this great MSDN article , my first idea was to simply check if the process is using an elevated Administrator group, and using AdjustTokenGroups() I would set the Administrator group to SE_GROUP_USE_FOR_DENY_ONLY . Unfortunately though, we can't modify the administrator group on the currently running process as it also has the SE_GROUP_MANDATORY attribute, which makes it inelligable for changing. The MSDN document has this to say about it: The AdjustTokenGroups function cannot disable groups with the SE_GROUP_MANDATORY attribute in the TOKEN_GROUPS structure. Use