Shell - 2013-12-14

wmiprvse.exe is the name of WMI provider host process, so I think you had a false alarm from your antivirus. If it eats a lot of CPU time, try stopping Windows Management Instrumentation service and check whether the problem persists. Note that this will stop Windows Firewall as well.

Of course, a virus could have disguised under that name, but 7-Zip does not contain any malware (if you download it from or

Last edit: Shell 2013-12-14