Forum Discussion
Wiford
Jul 07, 2026Brass Contributor
A broken system update that only succeeded on 20% of install attempts
My Windows 10 system has been failing to install a recent cumulative update, with the installation process only succeeding about twenty percent of the time and hanging or rolling back the rest, l...
Jamony
Jul 07, 2026MCT
Hi, I would start by resetting Windows Update components and then installing the latest cumulative update manually from the Microsoft Update Catalog. Before retrying, run DISM /Online /Cleanup-Image /RestoreHealth and sfc /scannow to repair the component store. If it still fails, the exact error code in Windows Update history or CBS.log will point to the real cause.