Microsoft Office Communicator 2005 not installing from Network Share: This installation was interrupted

I have encountered problems launching the MSI to install Microsoft Office Communicator 2005. The installation fails prematurely. This problem occurred while installing from a network share but may also occur when installing locally. Typically the installation is halted by an error stating that the installation was interrupted.

PROBLEM: Microsoft Office Communicator 2005 installation fails and doesn’t not complete when installing from a network share or from the local machine.

ERROR MESSAGE: "This installation was interrupted. No Changes were made to your computer system. Please try running this installation again."

SOLUTION: Copy the installation folder to the local disk and install from there.

If that does not work, search the computer for Windows Update patch KB974571 and remove it if found.

WALK-THROUGH:

1. Copy the installation folder to the local drive.
2. Click "Start" then click "Control Panel"
3. Now double click "Add/Remove Programs"
4. Scan through Add/Remove until you see the patch KB974571 *NOTE You may need to click "Show Updates" at the top of the window.
5. Once you see the patch, uninstall it by choosing "Uninstall"
6. Reboot the computer.
7. Now, try installing Communicator again.
8. Issue resolved.