The permissions wizard it asking the OS if the account has this right or not. If the OS returns saying that it does not you will get this error. Are the risk of stating the obvious here, does the account have this right? Let me know if you need pointers on out to check for it.
This setting is found in the Local Security Policy, under the Security Settings, Local Policies, User Rights Assignment. Click on the User Rights Assignment in the MMC and "Act as part of the operating system" will be the second from the top. There are two settings, one for the Local Setting of the user/machine, and the Effective Policy (which may be getting overridden by a Site, Domain, or OU policy). Have you checked these settings to confirm your userid is enabled?
I'm not able to access my old voice mail messages all of a sudden. The recording says something like 'the message is currently not available'. This has never happened before in all the years I have been using this system. I have t...