When it comes to Windows, I always thought I could always find downloaded updates in Windows\SoftwareDistribution\Download folder and delete them, then run "DISM /online /Cleanup-Image /StartComponentCleanup /ResetBase" and maintain Windows folder size. That, however, does not happen. Windows partition keeps getting bigger and bigger, specially after updates. I am not talking about my browser's cache or cookies because partition space gets lost by 1GB or so after each major update, even after I remove all SoftwareDistribution \Download folder files, Prefetch folders files, and run "DISM /online /Cleanup-Image /StartComponentCleanup /ResetBase" . Just to make sure all is OK, I also run "DISM /Online /Cleanup-Image /RestoreHealth" and "SFC /ScanNow" and Chkdsk. I verify that my page-file and hibernation files stay the same size and they do stay the same size. I use CCleaner with CCEnahncer, which most definitely gets rid of ALL temp files. Drive's "Disk Cleanup" and "Cleanup System Files" do not show any files or folders that take up more than 10MB of space... I think this MAY BE from MS Office 2013 updates, which can also be massive! I assume they also get downloaded into SoftwareDistrubtion\Download folder, which as I stated, I clean up good. I also remove MSOCache hidden folder from drive C. Are there any other places where MS Office 2013 updates may be hiding? What else could this be? Unfortunately, I have not monitored whether it is Windows folder on C drive that gets bigger or some other folder, but one way or another - updating Windows 10 and MS Office 2013 results in lose partition space, even after removing update files from SoftwareDistribution\Download folder, deleting MSOCache folder, and running ResetBase... Any ideas why and how to get my precious space back???