CCleaner keeps crashing during scans — how can I fix it?

CCleaner often crashes during scans because of corrupted cache files, conflicts with antivirus software, or outdated builds that don’t fully support your OS version.

First, update CCleaner to the latest version from the official site and temporarily disable real-time antivirus scanning to test for conflicts.

If crashes continue, reset CCleaner settings by reinstalling it cleanly and running it as administrator, since damaged configuration files commonly cause scan failures.

You should also avoid enabling aggressive options like deep registry cleaning or large custom include paths.

On older or low-memory systems, scans can fail due to RAM limits, especially when multiple apps are running in the background.

Closing other programs and scanning only essential categories often stabilizes the process.

These are key solutions that we can offer. If you have more, please share.