: These files are typically intended to be temporary. If you find them in folders like C:\Windows\Temp or \AppData\Local , they are usually safe to delete once an update has successfully finished. Important Security Note: CVE-2018-10115 & CVE-2022-29072
: It is often a byproduct of the Windows Update service or a system-run diagnostic tool like SFC (System File Checker) or DISM (Deployment Image Servicing and Management). WindowsUpdate_12YO_CI.7z
: You will most often find such files in temporary update directories or diagnostic logs generated when Windows is performing a large-scale certificate sweep or updating its internal revocation lists. Why Is It on Your System? : These files are typically intended to be temporary