I'm in the same boat, paid pro version, keeps closing when launched. Uninstall and reinstall didn't resolve the problem. I'm also running Windows 10 and Norton 360. Had a couple emails with support and shared log files but haven't heard any solutions yet.
[Fixed in 5.89.9401] CCleaner 5.89.9385 immediately closes on launch
in CCleaner Bug Reporting
Posted
I'm in the same boat, paid pro version, keeps closing when launched. Uninstall and reinstall didn't resolve the problem. I'm also running Windows 10 and Norton 360. Had a couple emails with support and shared log files but haven't heard any solutions yet.