Repair Windows system files before installing Office
Running DISM and System File Checker when Office setup keeps failing
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Last Update 12 dagen geleden
When Office setup keeps failing after a restart and a fresh download, damaged Windows system files can be the cause. Windows has two tools for this. DISM repairs the Windows image that system files are restored from, and System File Checker then checks the system files themselves and replaces damaged ones. Run them in that order.
Run the two tools
1. Open Start, type cmd, right-click Command Prompt and choose Run as administrator.
2. Run DISM and wait for it to finish. It can take several minutes. Keep the PC online, because DISM downloads replacement files through Windows Update.
2. Run DISM and wait for it to finish. It can take several minutes. Keep the PC online, because DISM downloads replacement files through Windows Update.
3. Run System File Checker.
4. Restart the PC and run Office setup again.
What the results mean
| Message | What it means |
|---|---|
| "Windows Resource Protection did not find any integrity violations." | No damaged system files were found |
| "Windows Resource Protection found corrupt files and successfully repaired them." | Damaged files were replaced. Restart before you install Office |
| A message saying some damaged files couldn't be repaired | Restart and run both commands again |
| A message saying the operation couldn't be performed | Microsoft's advice is to run the scan again in safe mode |
Microsoft's page Use the System File Checker tool has more detail on each message.