Summary

When you attempt to run the setup program on a computer while you are connected to that computer through a Terminal Services client, the installation may fail with one of the following error messages:

Internal Error 2755. 3 <Path>\adtempus.msi.

or

Error reading from file: <Path>\adtempus.msi. Verify that the file exists and that you can access it.

This problem occurs if the path to the installation files is a mapped drive letter.

More Information

For example, if the installation CD is mounted on your client computer, and the server has a drive letter mapped to that CD drive, you may receive the error.

Workaround

Either use the full UNC path to the setup files instead of the drive letter, or run the installation from a CD loaded at the server or from a downloaded setup package that is on the server.

Status

This is a problem with the Microsoft Windows Installer. See Microsoft Knowledge Base article Q255582 for more information.