This is one of the reasons why we recommend not to use ComboFix on your own. There are risks involved and we would prefer it if someone who knows how to resovle any issues that may arise is supervising its use.
As a general policy, Bleeping Computer does not offer advice
on how to run ComboFix unless we asked someone to run it or
if there is a problem with the computer caused by running the tool. Per the developer, people should not be using ComboFix without being advised to do so by a trained expert (see here
) who is assisting them deal with a malware problem. When issues arise due to complex malware infections, possible false detections, problems running ComboFix (i.e. stalling, hanging, crashing) or with other security tools causing conflicts, experts are usually aware of them and can advise what should or should not be done while providing individual assistance.
With that said, there are circumstances ComboFix will hang
or stall at various stages
due to malware interference
, failure to disable other real-time protection tools or the presence of CD Emulators (Daemon Tools, Alchohol 120%, Astroburn, AnyDVD) so that it does not complete successfully. Also, depending on how badly a system is infected, ComboFix may take longer to complete its routine than it normally does or fail to run properly. While that is not normal behavior, it is not unusual. In such cases, it is helpful to know at what stage ComboFix stalled/crashed and to provide that information to the Helper who is assisting you so they can investigate. Usually using Task Manager to stop ComboFix's related process is enough to abort it.
Open Task Manager
and look for the following ComboFix related processes (some have a .3XE extension):
- any file that has the extension *.3XE except CF*****.3XE <- do not end this process
One at a time, right-click and select End Process
. If doing that did not free ComboFix and allow it to continue, then you will need to reboot the computer manually.