How to clear all cache and junk files from my Windows 11/10 computer?

When using Disk Cleanup to clear cache and junk files on Windows 11, there are some important errors to avoid to ensure you don't accidentally delete important data or cause issues with your system:

1. Deleting Important Files: Be cautious when selecting items to delete. Avoid selecting system files or other data unless you're sure they are safe to remove, especially if you're not familiar with what each category contains.
2. Not Reviewing Files Before Deletion: Always review the list of files and categories (like Temporary Files, System Cache, Recycle Bin, etc.) before confirming deletion to prevent removing anything unintentionally.
3. Ignoring the Recycle Bin: If you want to recover files later, don't empty the Recycle Bin accidentally through Disk Cleanup. Double-check what’s selected.
4. Using Disk Cleanup Without Backup: While it's generally safe, if you're deleting large amounts of data or system files, consider creating a backup beforehand just in case.
5. Not Running as Administrator When Needed: Some cleanup options require administrator privileges. Ensure you run Disk Cleanup with the appropriate permissions to access all necessary files.
6. Relying Solely on Disk Cleanup for All Cleaning Needs: Disk Cleanup is useful for basic cache and junk files, but for more thorough cleanup (like removing leftover files from uninstalled programs), consider additional tools for clearing all cache and junk files on Windows 11.
7. Closing Important Applications Before Cleanup: Close active applications to prevent conflicts or issues while cleaning system files.
8. Not Restarting After Cleanup: Some files may only be fully cleared after a system restart. Restart your PC after cleaning to complete the process.