This article was previously published under Q230895
When you run Office Setup, you may receive the following error message immediately after you click Install Now or Upgrade Now:
Installation ended prematurely because of an error.
When you click OK, Setup ends.
This error may appear if all the following are true:
You are using Microsoft Windows NT 4.0. -and-
You are running Office Setup from a CD-ROM drive. -and-
You are using one of the security templates available with the Microsoft Security Configuration Manager. -and-
You have the Restrict CD-ROM access to locally logged on user only security option turned on.
This is because the Windows Installer runs as Local System when it is read off the CD-ROM drive. The problem is that Local System is denied access to the CD-ROM drive when this security policy is set.
NOTE: This error message also may appear if you do not have the Restrict CD-ROM access to locally logged on user only security option turned on but the AllocateCDRoms value under the following registry key is set to 1:
To work around this problem, do either of the following:
Method 1: Run Setup from a Network Server
If you are in a networked environment and you have access to an administrative installation of Office 2000, run Setup from this location instead of your CD-ROM drive. The security settings mentioned in the "Cause" section of this article do not affect running Setup from a network server.
Method 2: Turn Off the "Restrict CD-ROM Access to Locally Logged on User Only" Security Option
If you turn off the Restrict CD-ROM access to locally logged on user only security option, you can run Setup from your CD-ROM drive. Please see the documentation on the Microsoft Security Configuration Manager for more information about modifying this setting.
NOTE: You may have to restart after you turn off the Restrict CD-ROM access to locally logged on user only security option before you can run Setup from your CD-ROM drive.
For more information about the Microsoft Security Configuration Manager, visit the following Microsoft Web site: