Issues with Deploying SAP Outlook & Excel Add-ins

Issues with Deploying SAP Outlook & Excel Add-ins

The add-in are .exe files. When I try to install the pkg from the Self Service Portal, I receive the following error: 

"This installation package could not be opened. Verify that the package exists and that you can access it, or contact the application vendor to verify that this is a valid Windows Installer package."

I am able to deploy other .exe files and have no issues installing them. 

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