18/11/2025
This year's app/software redesign fail award goes to CCleaner, who have made a previously useful product utterly unusable with their latest version. Hideous, pointless, slower than glacial procession, doesn't do half the things the previous version did, you'll lose any custom settings from the previous version, and seems more likely to mess up your device than to clean out the trash. Certainly seems to be few users with anything good to say about v7.
If you haven't updated to CCleaner v7 yet, ffs switch off auto-update in the settings and wait until/if they fix things. If you have already, there are instructions on their support pages for rolling back to v6.x (but in short, download last 6.x version, uninstall 7, restart, install 6.x version), but you'll lose any custom settings regardless.