I tried downloading it again, and it says it's already been downloaded so I went to find it in my programs, and couldn't find it. I am trying to download Windows Live Messenger.I downloaded it a couple weeks ago, and I got on tonight and my mom deleted it off our computer.Here is a fix for you: Close all Microsoft applications, such as Microsoft Outlook, OneNote, Excel, Word, OneDrive, etc., and then click 'Check for Updates'.It will update the AutoUpdate tool.Getting the error 'Another Installation is Already in Progress' while trying to install an application in Windows 10? First make sure that there is no pendin.