lf the logged in user is part of Local Administrators group, then he can use the custom install option to unselect the updates which will be eventually hidden. These updates will not be offered by the WUA at the next detection/scheduled installation time. Scripting Guru Torgeir Bakken has posted an excellent .vbs script to unhide those hidden updates. According to Torgeir Bakken (MVP) If you are afraid that some users will hide some updates using the custom install option, here is a counter-measure