Relevant Product: Exclaimer Cloud - Signatures for Office 365
Scenario
You are attempting to run the installation for the Exclaimer Cloud Signature Update Agent using the Microsoft Windows Installer (MSI) file and you encounter an error similar to this that prevents the installation from completing:
OR
"The system administrator has set policies to prevent this installation"
Resolution
To resolve this issue:
- Set the following registry key to allow the app to be installed:
Value: DisableMSI
Data Type: REG_DWORD
Data: 0
- If the value of this per-machine system policy is set to '2' the installer is always disabled for all applications.
- If the policy value is set to '1', the installer is disabled for unmanaged applications but is still enabled for managed applications.
For more information, see System Policy.
The following table lists the possible configurations.
|
DisableMSI |
Description |
|
Default |
On Windows Server 2008 and Windows Server 2008 R2, if the policy value is Null, absent, or any number other than 1 or 2 then the Windows Installer is enabled for managed applications. All unmanaged application installs are blocked. On Windows XP and Windows Vista, the Windows Installer is enabled for all applications. All install operations are allowed. |
|
0 |
Windows Installer is enabled for all applications. All install operations are allowed. |
|
1 |
The Windows Installer is disabled for unmanaged applications but is still enabled for managed applications. Non-elevated per-user installations are blocked. Per-user elevated and per-machine installs are allowed. |
|
2 |
Windows Installer is always disabled for all applications. No installs are allowed, including repairs, reinstalls, or on-demand installations. |
For more information, see DisableMSI.