We use RunOnceEx to run post unattend processes. Some of the processes run regedit /s with a reg file. These have always worked fine in a 32bit OS. However, when I started running these in a 64bit OS, the settings do not stick. We have simply lived with the issue since 2003 64bit, but now I would like to find an answer. Interestingly, if I pause RunOnceEx with a cmd /k, then manually apply the reg file and open RegEdit, the changes do appear. However, when I reboot, the changes are reverted. Any ideas? Anyone else seen this in 64bit OS's?