An update frozen for hours, or one that downloads, fails and starts again in a loop — usually the update's own cache or its services are stuck. The technician's fix is a controlled reset: stop the services, clear the cache, start fresh.
Windows Update works using background services, mainly wuauserv (Windows Update) and bits (Background Intelligent Transfer Service), and it stores downloaded update files in a cache folder called SoftwareDistribution. If a download is interrupted or a cached file is damaged, every new attempt trips over the same bad cache — that is the loop most users get stuck in. The reset below stops the services, renames the old cache so Windows is forced to build a clean one, and starts the services again. Nothing about your personal files is touched. Open Command Prompt as Administrator (right-click Start → Terminal (Admin) or Command Prompt (Admin)) — service commands will not work without it — and type each command exactly, pressing Enter after each.
net stop wuauservnet stop bitsnet stop cryptsvcRenaming (instead of deleting) forces Windows to create a fresh cache while keeping the old one as a backup you can remove later:
ren C:\Windows\SoftwareDistribution SoftwareDistribution.oldren C:\Windows\System32\catroot2 catroot2.oldnet start wuauservnet start bitsnet start cryptsvcStopping services, renaming system folders and restarting cleanly are everyday moves in the CMD toolkit. The full video shows the complete service-management and repair command set with live examples.
DISM /Online /Cleanup-Image /RestoreHealth followed by sfc /scannow — because damaged system files also break updates. And give a genuinely slow update real time first: some feature updates legitimately sit at one percentage for a long while on older hardware. Reset only when it is clearly stuck for hours with no disk activity.
Services, repair, network, disks and users — the complete technician toolkit demonstrated live in one video.
▶️ Watch Full VideoYes, it is the standard reset technicians use. The folder only holds downloaded update files and update history records. Windows builds a new one automatically. Your documents, apps and settings are stored elsewhere and are not affected. You will lose the visible update history list, nothing more.
Almost always, a service is still running and holding the folder — repeat step 1 and confirm all three stop commands succeeded, or restart the PC, open CMD as Administrator immediately, and run the stop and rename commands before opening Windows Update.
If the percentage has not moved for 2–3 hours and the disk activity light is idle, treat it as stuck and do the reset. On slow hard disks, however, big feature updates can legitimately take a very long time — if the disk is busy, let it work.