Why did RJL System Cleaner skip some files during cleaning?

Files are skipped during cleaning for one of these reasons:

• File in use -- Another program has the file open and Windows will not allow it to be deleted. This is common with browser cache files when the browser is running, and with temp files used by active applications.
• Permission denied -- The file requires Administrator privileges to delete and the app is not running as Administrator. Right-click the .exe and select "Run as administrator" to clean system-level files.
• File disappeared -- The file existed during the scan but was deleted by another program or by Windows before the clean could reach it. This is harmless.

Skipped files are reported in the post-clean summary and recorded in the log file with the specific reason. You can view the log from Tools > View Latest Log.

Skipping is by design -- the app never forces a deletion or halts the operation because of one problematic file. It cleans what it can and reports what it could not.