1321Hero

@nukecad The FF proxy setting was No Proxy when I checked this A.M. and I wouldn't have changed it that way, if the FF default is Use system proxy. Just changed that to use system proxy setting and was able to download both the latest official and slim builds instantaneously. One caveat is I powered the PC system off when I left my desk for a couple of hours after the failures this A.M., and rebooted again this P.M. and now it worked. I'll leave FF set to use system proxy and monitor things. Haven't tried to download any .exe files from other sites in recent weeks so don't know if there's something FF on my PC doesn't like about the CCleaner site. I could reset FF or uninstall/reinstall it if the problem recurs. Thanks.

Date, time and time zone all shown correctly when I open the Win 10 Time & Date screen. I clicked button to synchronize, just to be certain. No idea what PKiDDiTB.exe is either. That's what the error message said when I tried to download CCleaner from the link provided here. Not trying to test by downloading anything other than CCleaner. Googling for that file name doesn't find a single thing, which is why I posted the screen shot, so you'd see exactly what I saw. Using Windows Defender. And an on-demand malwarebytes scan found nothing. FF General>Networking is set to No Proxy Just tried to download the slim build again in FF from the link posted above, and got another error message, similar to the one I posted above, but with a different file name that couldn't be saved (see below). Are these file names being randomly generated by the server? Tried to download the slim build again, but this time in a private FF window. It downloaded and I was able to update to v5.92.9652. So the immediate issue is resolved, but it doesn't explain what causes the failures from the link to check for updates inside CCleaner or when trying to download it manually without using a private FF window. Thank you!

Thanks everyone... Just tried to download the slim build using FF and got the same error message: Error code: SSL_ERROR_RX_RECORD_TOO_LONG I clicked Try again in that error box and it looked like it was going to download and asked me where to save it, but then this popped up: I don't have another browser on this PC to test. Why can't I even download the update from the Update link in the CCleaner software?

Running CCleaner 5.59.9401 (free) in Win 10 Pro 21H2 (64-bit). Tried to update using the update link in CCleaner to 5.92.9652. I get this error: 0x2f7d An error occurred in the secure channel support Went directly to the download page on the website using Firefox 99.0.1. Selected the free version and clicked to download, but I get this error: An error occurred during a connection to bits.avcdn.net. SSL_ERROR_RX_UNEXPECTED_RECORD_TYPE If I click Try Again, I get this error: An error occurred during a connection to bits.avcdn.net. SSL received a record that exceeded the maximum permissible length. Error code: SSL_ERROR_RX_RECORD_TOO_LONG I only have one add-in installed in Firefox, and disabling the add-in, clearing the browser's cache and cookies gives me the same error messages. How do I fix this? Thanks! EDIT: As a test, I just tried to download Speccy using Firefox but I get the same error messages from the site.

Same crashing happening here, running Win 10 Pro, 64-bit, v1909. It crashed once the first day I updated to this version, 4 times the next day and once already today. I only use the Custom Clean option, rather than the Health Check option. My error list (below) is identical to the one Bryanlky posted in the OP: Description Faulting Application Path: C:\Program Files\CCleaner\CCleaner64.exe Problem signature Problem Event Name: APPCRASH Application Name: CCleaner64.exe Application Version: 5.74.0.8198 Application Timestamp: 5faae541 Fault Module Name: CCleaner64.exe Fault Module Version: 5.74.0.8198 Fault Module Timestamp: 5faae541 Exception Code: c0000005 Exception Offset: 0000000000d68253 OS Version: 10.0.18363.2.0.0.256.48 Locale ID: 1033 Additional Information 1: 6bac Additional Information 2: 6bac26dc84dd1ec6cca94deb97601fbe Additional Information 3: 1273 Additional Information 4: 1273e6c4791b8960be282fa7f0bcf51c Extra information about the problem Bucket ID: c29e3a4e99144e6b03371bae481a95f0 (1384605845787678192)