System file scan in a short SFC scan is windows inbuilt program to fix corruption files of an operating system. It can fix several updates failures, other violations done by several mismatched files. To Run system file scan in your windows operating system, first Open command prompt (CMD) in admin mode and Run the command SFC/SCANNOW

Office 365 installation Error code 30125-9 (500) fixes with this scan if there are no serious issues. If you see any file violations that exist after the scan, then check Event viewer to understand the causes of office 365/2021 update error code 30125-9 (500). Watch the video to know how to perform SFC SCAN to fix office 365/2021 Program Error code 30125-9 (500).