Quick answer: Old crash dumps are usually safe to delete after you no longer need them for troubleshooting.
Why this uses C drive space
Windows and apps create dump files after crashes. They can be small minidumps or very large memory dumps.
Safe cleanup steps
- Decide whether you still need the dump for debugging.
- Use Disk Cleanup or Storage settings for system error memory dump files.
- Remove old app crash dumps after the issue is resolved.
- Check free space after cleanup.
- Keep recent dumps if support requested them.
What to avoid
Do not delete crash dumps before sending them to support if you are diagnosing repeated blue screens or app crashes.
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.