CCleaner v7.13.1573 Released with Windows Compatibility Updates

Inside CCleaner Build 7.13.1573: Key Architecture Adjustments

Piriform has deployed CCleaner v7.13.1573 to address recent changes introduced by recent Windows cumulative servicing updates. Modern versions of the operating system have altered how temporary update staging folders, thumbnail caches, and session log files are locked. The updated build addresses these exact file lock issues, preventing unexpected background worker crashes during full disk sweeps.

In addition to core system hook adjustments, this update brings enhanced parsing rules for Chromium-based and Gecko browsers. Users running multiple browser profiles will notice that cached sandbox databases and redundant telemetry logs are removed without invalidating active sessions or stored password tokens.

Performance Gains and Practical Benchmarks

During our lab testing across ten test rigs running varied hardware configurations, build 7.13.1573 demonstrated significantly improved scan completion times and lower RAM overhead while running in memory. The scanner no longer gets hung up on deeply nested Windows Event Viewer trace files or fragmented component store remnants.

• Full alignment with Windows 11 component store structure and modern sandbox caches.
• Improved detection logic for uninstalled application registry remnants and broken COM objects.
• Minimized idle RAM footprint down to under 42 MB during scheduled background monitoring.

“Routine system maintenance works best when optimization tools respect OS boundaries rather than aggressively stripping protected system handles.”

— Mark Davis, Senior Systems Analyst

Best Practices for Clean and Stable System Operation

Running CCleaner once every two to three weeks is generally more than sufficient for everyday workstations and gaming desktops. Over-cleaning can force Windows to repeatedly regenerate useful thumbnail databases and shader caches, which leads to temporary sluggishness. We advise selectively targeting browser temp storage, discarded download staging items, and old setup files while leaving default Windows Defender caches intact.