Quick answer: Delivery Optimization files are usually safe to remove through Windows Temporary files after updates are complete.
What this means
Windows uses Delivery Optimization to cache update downloads for your PC or local network. The cache can be rebuilt if needed.
Safe cleanup steps
- Make sure Windows Update is not actively downloading.
- Open Settings > Storage > Temporary files.
- Select Delivery Optimization Files.
- Click Remove files.
- Restart if Windows Update behaves oddly afterward.
What not to delete
Do not disable update services just to delete this cache. Use the built-in cleanup option.
When to use DiskTidy
Use DiskTidy when you want a local, review-first scan for temporary files, browser cache, cleanup candidates, and large files before deciding what to remove.
FAQ
Will cleanup make Windows faster?
It can help when the C drive is nearly full, but cleanup is mainly about restoring free space and update reliability.
Should I use one-click cleanup?
Use review-first cleanup. One-click deletion is risky if it includes Downloads, personal folders, browser profiles, or system components.