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  1. I'm having the same trouble except on a desktop PC. I have three licenses but this one is the only device with Windows 10 Pro 64-bit. The other devices are Windows 10 Home 64-bit and Home 32-bit; those are working fine so far. Mine I have set for automatic updates and about 3 days ago I noticed Windows 10 Pro 64-bit was slowing to a crawl. Rebooting fixed it but only for an hour or so, then everything slowed again. I noticed CCleaner was frozen, but I thought that was also due to Windows slowing because everything else was very slow or not responding. Went through a bunch of performance diagnostics and fixes for Windows--nothing. I was just starting to think about hardware failures until tonight I just stopped CCleaner 5.69.7865 and Windows was instantly back to normal speed without rebooting. There is something wrong with this version of CCleaner and Windows 10 Pro 64-bit. I never had to shut CCleaner down before, and I've used it for many years. Now I just throttle the app on and off as my workaround.
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