XP Home with SP3 32 bit - Your Operating System (and whether it’s 32bit/64bit);
CIS 3.11.108364.552, Proactive, Virus signature 2717 - Security Software Installed;
Launched System Cleaner and performed SCAN ( error before chance to CLEAN) - How you produced the problem;
CCleaner found only 3 registry errors, they were all Unused File extensions.
I let those errors remain and I closed CCleaner.
System Cleaner did very much better - it found those same 3 errors plus another 37 registry errors
System Cleaner did very much worse.
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After counting those 40 errors it gave a pop-up
“An error occured during the registry scan process”
It was still at stage 2. I clicked OK and it moved onto stage 3,
without spending more than 2 seconds ignoring all the COM ActiveX and everything that followed.
I cancelled instead of cleaning.
The above was repeatable.
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I cancelled detection of File extensions and those 40 errors were not detected and the error pop-up never appeared,
Instead it continued the scan and found 150 COM ActiveX errors.
This shows that a scan malfunction during File Extensions will prevent detection in subsequent categories.
I rechecked File extensions and again had 40 off file extension errors and nothing else.
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I then proceeded to CLEAN and it looked like it did - but really it failed.
I scanned again and those errors were not detected, but the error pop-up aborted the scan as it moved onto the COM ActiveX errors.
Only by again unchecking the File Extensions could I Scan and have the opportunity to see and remove 150 off COM ActiveX errors
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I closed System Cleaner and launched CCleaner, and the 3 File Extensions were still detected, even though System Cleaner had deleted them and could no longer see them.
After a reboot then CCleaner could no longer see them.
I think this is an anomaly due to CCleaner processing HKCU, e.g.
HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts.idx
Whilst System Cleaner processes HKLM, e.g.
[HKEY_LOCAL_MACHINE\Software\Classes.wpg]
I am not too troubled by anomalies/discrepancies between the results of different registry cleaners,
BUT am very concerned that System Cleaner can abort scanning without saying the scan is aborted,
and if all file extension errors have previously been resolved then when it scans and finds zero such errors,
it aborts scan and after cancelling the error pop-up System Cleaner announces
“Your registry appears to be clean as no errors were found”,
even though there are another 150 off if only it continued to scan.
I had very similar issues with both the Installed version installed on my Flash drive, and also with the Portable version on my Flash Drive.
The only difference I noticed was that with the installed version, when File extensions were unchecked and the the scan continued, I could STOP and it would freeze until I allowed it to proceed, so by waiting until it was scanning the final “Software” group I could see and write onto paper the actual quantities of errors in each group before I allowed it to proceed.
With the Portable version as soon as I clicked STOP the scan aborted and it proceeded on to the end.
Regards
Alan