This article was previously published under Q294978
When you run Setup, you may receive the following error message:
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 this is a valid Windows Installer package.
This error message can occur if the name of the network share from which you are running Setup is more than 12 characters in length (13 characters or more). For example, you receive the error message if the path to Office Setup is:
In the preceding path, the long_share_name is more than 12 characters.
To resolve this problem, rename the network share from which you are running Setup. For example, if the path to Office Setup is
rename the network share to share_name. This makes the new path to Office Setup the following:
Because share_name is 12 characters or fewer, you will not receive the error message when you run Setup for Office.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.