How To'sWindows

Fix: WWAHost.exe High Disk, CPU or Memory Usage

If your PC is getting really slow then you might have discovered that there is a WWAHost.exe process running in Task Manager that is gobbling up a lot of resources. Even if you haven’t checked the Task Manager and you feel like your computer is a bit slow, open up the Task Manager and you will most likely see a process named WWAHost.exe. The WWAHost.exe might start automatically or you might see it running only after running a specific app like your Mail app. The WWAHost.exe will most likely eat a lot of your memory or your CPU.

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

  1. Hold Windows key and press I
  2. Select System

  1. Select Apps and features from the left pane

  1. Now scroll through the list and select the app you want to uninstall.
  2. Click Uninstall

  1. Close the window
  2. Hold Windows key and press R
  3. Type WSReset and press Enter

  1. It should take you to the Store app. You can check whether the cache is cleared or not

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

  1. Hold CTRL, SHIFT and Esc keys simultaneously (CTRL + SHIFT + Esc)
  2. This will open up the Task Manager
  3. Simply select the WWAHost.exe from the list and select End Task from the bottom right corner of Task Manager

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

  1. Hold Windows key and press I
  2. Select System

  1. Select Apps and features from the left pane

  1. Now scroll through the list and select the app you want to uninstall.
  2. Click Uninstall

Once done, you should be good to go.

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Expert Tip

Fix: WWAHost.exe High Disk, CPU or Memory Usage

If the issue is with your Computer or a Laptop you should try using Reimage Plus which can scan the repositories and replace corrupt and missing files. This works in most cases, where the issue is originated due to a system corruption. You can download Reimage by clicking the Download button below.

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