Users wanting to use Windows Live Messenger can get an error code during the installation of the software. Users may not realize that the Windows installer they have been using has been corrupted. In order to keep their PCs in good condition and free from error codes, users can download a particular installer to get rid of such error codes. To begin the process, the user has to click on the start menu and then run. In the run command, the user has to type unreg/msiexec. The next step is to click on the OK button. To find out the rest of the installation process, keep reading the article below.