When the scan of the McAfee-SecurityCenter for the complete system (= McAfee-complete scan) starts, at first it starts smoothly and one can see the scanning progress: the scan-percentage is running from 0 to 99% and the number of the already scanned elements is running. But if the complete scan reaches 99%, there is no further scan-progress. It is endless scanning and scanning and scanning without any progress. I tried to scan over night, but even after more than 24 hours continuously scanning no result: Percentage remains at 99%, no information about any viruses/malware which were perhaps found and no progress by the scanned elements (it was the same scanned element as 24 hours before). I even can't cancel/stop the running scan by the cancel-button. The cancel-button is blocked. I tried several times the complete scan again and find, that the last element, where the scan stops, is never the same, but every time different files or different drives. Obviously the scan hangs-up. It remains only the radical method to stop the scan: Reboot the laptop. On the other hand the resources of my laptop are nearly blocked by the running scan.
After contacting McAfee-support I should reinstall McAfee SecurityCenter according instruction, but without any result.
To compare this phenomenon and to check whether there are, perhaps, viruses/malware on my laptop, I tried a complete scan with several other scan systems (e. g. Panda, Kaspersky, SuperAntiSpyware, Malwarebytes, TrendMicro ....). First result: No problems with any other system, even if two systems were scanning simultaneously, and none infection on my laptop was find. Second result: All other systems were partially significant faster and don't require so much processor capacity.
On the other hand, interestingly, that problem doesn't occur by the McAfee-fast scan. The fast scan runs to 100% without any problem and if I tick the box "shut down pc, if no infection was find", my laptop shuts down. Result: I can't use the complete scan, but only the fast scan.
Obviously the cause is not my laptop or installed software, but the McAfee-complete scan only (because the fast scan runs properly).
System data: Windows 7 64 bit, SecurityCenter 12.8, Anti-Virus 16.8
Solution is highly appreciated!