http://interactiveasp.net/blogs/natesstuff/archive/2013/02/14/getting-the-productid-of-an-installed-program.aspxIt’s sometimes nice to be able to uninstall a previous version of your product before installing a completely different new replacement app. You can do this by using the msiexec /u {product id} command but who the heck knows the Product ID? I do if IenCommunityServer 2008 (Build: 30417.1769)