Installing the Outlook Add-In on Terminal Server


  • All versions
  • EFT v4.x to v7.4.x stores advanced properties in the registry.
  • EFT v8.x stores Advanced Properties in a JSON file.
    • When you upgrade fto EFT v8, the non-default settings that you have defined in the registry will be added to the Advanced Properties file during upgrade. (Default settings are part of the EFT configuration files.)
      Please refer to the help for your version of EFT for a spreadsheet of advanced properties.


Terminal Server is a Windows environment in which users can make a connection to a central server and access Outlook on that server instead of their desktops.

  • Before installing the Add-In on a Terminal Server, ensure that no one logged into the server is currently using Outlook. Outlook cannot be open during the Add-in installation.
  • Users must install the Add-In under their own profiles.

Users who are not administrators on the Terminal Server may see an error when installing the Add-In that says policies are set to prevent this installation. To work around this error, you can add a registry entry under HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\.

To add the registry key

  1. Locate or create the registry key HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Installer.
  2. Right-click Installer, then click New > DWORD Value.
  3. Name the value DisableMSI.
  4. Right-click DisableMSI, then click Modify and ensure the Value data is 0. (For more information about this registry value, refer to the MSDN article DisableMSI.)