Many people use Patch Management to meet all of the patching needs. Operating Systems, Office installations, and other applications all can get the benefit of Patch Management's capabilities. When patching MS Office, frequently, access is required to the source files that were used during the install, in order for the patches to apply correctly. But what about other applications, such as MS Visio, and MS Project? Do they have the same requirements? Well, KB article 37609 may not answer the questions for all other MS applications, but it does give the Visio and Project scoop. See the link here for the answer: https://kb.altiris.com/article.asp?article=37609&p=1