WWAHost.exe is a legitimate Microsoft program. In fact, it is one of the Windows core system file so seeing WWAHost.exe running in the Task Manager is normal and you shouldn’t worry a lot. However, consuming a considerable amount of memory or your CPU is not normal for WWAHost.exe. If you are experiencing these kind of issues then the problem might be caused by a corrupt file. These things can cause your apps and processes to misbehave.
Method 1: Uninstall Mail App and Clear Cache
If your problem is specific to the Mail app or any other app i.e. the WWAHost.exe appears or starts consuming a lot of resources after opening a specific application then the problem is most likely because of a corrupt file. In these cases, uninstalling the application and clearing the store cache can help resolve the issue. Follow the steps given below to uninstall the Mail app and clear the store cache
Install the app again and check if this resolves the issue
Method 2: Terminate WWAHost.exe
This isn’t a solution but kind of a workaround. A simple workaround is to simply terminate the process from the Task Manager. One the process is terminated, it shouldn’t consume any resources. Here are the steps for terminating WWAHost.exe This should fix the issue temporarily.
Method 3: Uninstall App
This might not seem a solution but this is your only choice if nothing else worked. If nothing is resolving your high CPU or memory usage by WWAHost.exe then simply uninstall the app that causes WWAHost.exe to run. Usually it is the Mail app and you can use any other third party Mail app. Same goes for other apps, if there is another app causing this issue then simply uninstall it and use an alternative of that. Here are the steps for uninstalling a Windows app
Once done, you should be good to go.
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