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OK .... I don't think CCLEANER wants to admit the 'current version ccsetup621' is buggy. It is - and the basic health check can slow to a crawl or just stop. I reinstalled an OLDER VERSION ccsetup619 and everything worked just fine. Fast, too. I'll continue to ignore their 'update now' messages until a new bug free version comes out.

Actually, downloading the newest version ... ccsetup621_slim.exe... does not fix the problem. CCleaner continues to freeze on 'Patching up your PC' even with the latest software.

Like most Win11 users, I use OneDrive to store almost all my data files. Whenever I run CCLEANER SCAN it advises me it will close OneDrive unless I uncheck it. And when I 'make it better' it also wants me to close OneDrive unless I uncheck it. I'm often in a rush - and if I let CCLEANER close OneDrive it will not open until I reboot the PC. Many times, in a rush - I've rushed thru CCLEANER and closed OneDrive. Thus, an entire day or more of work is NOT BACKED UP BY ONEDRIVE which is closed. I have tried the 'uncheck OneDrive in Custom Clean' approach .... that doesn't work. I have looked on 'Registry Cleaner' ... OneDrive is not an option to uncheck. Is there a simple 'one and done' precise way to tell CCLEANER to not close OneDrive? I did review I have looked on 'Registry Cleaner' ... OneDrive is not an option to uncheck. Is there a simple 'one and done' precise way to tell CCLEANER to not close OneDrive?

I use both REGISTRY BOOSTER (http://www.liutilities.com/) and also CCleaner v2.13.270 (which has a smaller Registry cleaner). One of them cut off the Registry Pointer to the Threatfire Heuristic Anti-Rootkit software (www.pctools.com) which put a couple of SYS files, including tfsysmon.sys, in my boot cycle. When I tried to boot VISTA, it would hang there every time. Safe Mode did nothing to help. Putting the install disk in the CD/DVD drive for "repair computer" didn't work. Thereafter, I could NOT boot my PC at all. With online tech help, and 4 hours of work, I'm back. Fortunately, the Boot Disk gave me the option to drop to DOS and I renamed the ThreatFire SYS files. Then, I couldn't update some recommended security updates using WINDOWS UPDATE. That took lots of help to fix. The techs say almost all Registry Cleaners do this sort of damage. In doing a CCleaner Registry Scan, I notice, for example, the following line that CCleaner recommends I delete: ActiveX/COM Issue InProcServer32\C:\Windows\system32\wuaucpl.cpl HKCR\CLSID\{5F327514-6C5E-4d60-8F16-D07FA08A78ED} Since Wuaucpl.cpl is a Windows Update Service-related file that is named Windows Update AutoUpdate Control Panel, which makes part of the Microsoft? Windows? Operating System. This appears to be one example of CCleaner registry scan proposing that I delete something that may be really critical to my Vista PC. Now I'm afraid to use any Registry cleaner, although I've long been a huge fan of CCleaner. What assurances can you give me your product is safe? What tricks can I use to only Registry/Clean junk, but leave in the important lines? Thanks, in advance.