You’ve probably landed here because you’ve found WWAHost.exe running on your computer and you’d like to know why. Fear not, it is not a virus. Microsoft intentionally put WWAHost.exe in Windows 8 as an executable necessary for certain Windows Apps. Read on for more details.
If you take a look at the description of WWAHost.exe in Task Manager you’ll see it says “Microsoft WWA Host.” If you think that’s a bit vague, you’re right! Microsoft is saying that the WWAHost process is a WWA Host… OK… that explains it right! Sarcasm aside, here’s what it does.
A look at WWAHost on my Windows 8 test system using Process Explorer reveals that it is currently hosting the platform that the Bing Weather app is running on.
WWAHost.exe is a safe and essential process in Windows 8. It acts as a host for Metro app processes similar to how svchost.exe acts as a host for .dll files. This process is safe and is best left alone to continue normal function on a Windows 8 system.