*Bulletin ID*	A2E_163
*Last Review*	05/11/2007
*Revision*	1.0
*Previous IDs*	None
*Obsoletes*	None

ERROR: User Installations Are Disabled By Policy on the Machine

Summary

Group policies may be set to prevent per-user installation of applications (as opposed to installation for all users on the machine). This especially applies to servers running Terminal Services, which disables per-user installations by default. Add2Exchange should not be installed on Terminal Servers.

Symptom

The installation fails with the error:

User installations are disabled via policy on the machine.

Description

Terminal Services or manual editing of the group policies of the server on which Add2Exchange is being installed may be set to prevent the installation of applications that do not make themselves available to all users. Because of Add2Exchange’s special role on the server, the installation process will only install and make itself available under the Add2Exchange Service Account. The process does not give the option to install for all users because no other user has the privileges necessary for the Add2Exchange Console to function properly.

The Group Policy Object editor (gpedit.msc) may have been used to edit the policy for user installations. You should consult with any other administrators in your organization to determine why this policy has been set and what impact it will have to unset the policy if you should so choose.

Resolution

If Terminal Services is the cause for having disabled per-user installations, the ideal resolution is to separate Terminal Services from the Synchronization Server (the server on which Add2Exchange is installed). It is up to your organization to determine the best deployment of services on your available hardware.

If you determine that you cannot install on any other server, you may attempt to temporarily enable per-user installations on the server in question.

THE FOLLOWING PROCEDURE IS NOT WARRANTIED BY DIDITBETTER SOFTWARE AS BEING FIT FOR ANY PARTICULAR PURPOSE AND IS PROVIDED AS-IS. DIDITBETTER SOFTWARE IS NOT RESPONSIBLE FOR ANY INCIDENTAL OR CONSEQUENTIAL ADVERSE IMPACT RESULTING FROM ITS USE.

1. From the Start menu, click Run…
2. In the Run… command dialog, enter gpedit.msc
3. In the Group Policy Editor, select Computer Configuration > Administrative Templates > Windows Components > Windows Installer
4. In the Extended Properties pane, double-click Prohibit User Installs
5. Click Disabled
6. Click OK and close the Group Policy Editor

If you have a reason to have this setting on Enabled in your normal course of administration, do not forget to revisit this setting after you have completed the Add2Exchange installation.

Applies To

• Add2Exchange Standard
• Add2Exchange Enterprise

Keywords: Installation, Group Policy