Quick answer: After Windows Update, use Temporary files, Windows Update Cleanup, and Windows.old cleanup only after confirming the update is stable.
Why this uses C drive space
Large Windows updates can leave rollback files and update caches. These are useful for recovery for a short period but can consume a lot of space.
Safe cleanup steps
- Restart after updates finish.
- Confirm Windows and apps are working.
- Open Settings > Storage > Temporary files.
- Select Windows Update Cleanup if available.
- Remove Windows.old only if rollback is not needed.
What to avoid
Do not delete rollback files immediately after a major update if you may need to revert.
How DiskTidy helps
DiskTidy can help you review temporary files, browser cache, cleanup candidates, and large files before deleting anything. It is designed for local, review-first cleanup instead of blind one-click deletion.