On trying to install Microsoft Communicator 2005, the installer quits producing a “Microsoft Office Communicator 2005 was not Installed” - “The installation was interrupted. No changes were made to your computer system. Please try running this installation again.”
The source of this issue is detailed here. The solution is detailed here. All one needs to do to fix the issue is to install ocsasnfix.exe. The file can be downloaded directly from Microsoft here.
