Microsoft KB Archive/249046
Article ID: 249046
Article Last Modified on 2/26/2007
- Microsoft Exchange Server 5.5 Standard Edition
- Microsoft Windows 2000 Standard Edition
This article was previously published under Q249046
Exchange Server Setup on a member server may not work and you may receive the following error message:
The Windows 2000 or Windows NT Event Viewer may display the following Event ID:
Event ID: 4
Description: An unexpected OS error occurred. Error Returned was .
The Exchange Server service account does not have the required permissions.
To resolve this problem, add the Exchange Server service account to the local Power Users group or local Administrators group on a member server. On a domain controller, add the account to the built-in Administrators group.
The minimum rights necessary for the Exchange Server service account on a member server are Power Users rights. However, if installation problems occur when you use the local Power Users group, add the Exchange Server service account to the local Administrators group. Also, if the local Power Users group is not available because of the type of installation that was performed, use the local Administrators group.
Additional query words: windows 2000
Keywords: kbprb KB249046