How to dwindling Free Space Windows 10? (opens in new tab)

My Windows 10 PC keeps losing free disk space even though I am not downloading or installing anything new. The available space on my C drive slowly drops by several gigabytes over the course of a day, and I have already run Disk Cleanup and deleted temporary files but the space keeps disappearing. When I use a disk space analyzer I can see that a system folder like WinSxS or SoftwareDistribution keeps growing in size.I suspect Windows Update might be downloading the same failed update repeate...