Stuart Cobb

@nukecad - thanks and good to know. I work for a large company and not sure what updates have been applied. I'm going to install on one of my other computers to see if it exhibits the same issue. Next step after that might be to our IT support org which is always fun. Thanks again Cheers

Hi folks - I downloaded and am using Ccleaner 5.65 on a Win10 Pro system running McAfee Enterprise antivirus (managed by my company) and am having this same issue. Ccleaner was working fine until this latest update. I just tried running it and see the following in Windows Event Viewer: Faulting application name: CCleaner64.exe, version: 5.65.0.7632, time stamp: 0x5e7256e6 Faulting module name: ntdll.dll, version: 10.0.17763.1098, time stamp: 0xfabbdc8a Exception code: 0xc0000005 Fault offset: 0x00000000000a46a7 Faulting process id: 0x760c Faulting application start time: 0x01d61cbb8cdbaaf2 Faulting application path: C:\Program Files\CCleaner\CCleaner64.exe Faulting module path: C:\WINDOWS\SYSTEM32\ntdll.dll Report Id: 608d3240-3486-4e48-861e-654ae0d01de7 Faulting package full name: Faulting package-relative application ID: At any rate, seems to me that the issue is not limited to TrendMicro. Any input here would be appreciated. Thanks