Ok here goes I create a user, assign the user administration rights. I add it to the Domain admins group and administrators group, all goes well then the next day the user is not an admin anymore and is not a member of administrators group. The user is for the sole purpose of backing up to a NAS drive, so every morning I have to run the backup. This is very frustrating to say the least. On the other servers I have no problem, what can it be.