How to Repair WWAHost.Exe High Disk, CPU or Memory Usage in Windows Computers

WWAHost.exe (Microsoft WWA Host) is a program from Microsoft that allows you to run some Windows applications correctly. So, if you come here wondering if WWAHost.exe is a virus and should be removed, it is not.

It’s a utility offered by Microsoft that resides in the System32 folder and you don’t have to do anything with it. The program was first introduced in Windows 8 and helped some applications to run JavaScript.

What is the reason why WWAHost.Exe causes high HDD, CPU, or memory usage?

If your problem is specific to Mail or another application, i.e. WWAHost.exe appears or starts consuming a lot of resources after opening a certain application, the problem is most likely related to a corrupted file.

How to solve the problem of WWAHost.exe high hard disk, CPU, or memory usage?

Stop WWAHost.exe process

  1. Right-click the Windows icon on your desktop to open the Start menu, then select Task Manager to continue.
  2. Locate the WWAHost.exe process by scrolling down the pop-up window, then right-click on it and select End Task.
  3. Once the problem of high WWAHost.exe CPU load is resolved, you can reactivate the process by following these steps.

Reinstall the Mail application and clear the cache

  1. Open the Settings window by pressing the Windows and I keys, then click on Applications.
  2. Go to the right side of the window and scroll down to find the target app.
  3. Click on it and select the Uninstall option.
  4. Then follow the instructions on the screen to complete the process.
  5. When the uninstall is complete, close the Settings window.
  6. Open the Run window by pressing the Windows and R keys, then type WSReset and click OK.
  7. You can then check to see if the cache has been cleared or not.
  8. After clearing the cache, reinstall the application and run it to see if the error persists.

Frequently Asked Questions

  1. Hold down CTRL, SHIFT and Esc (CTRL + SHIFT + Esc) at the same time.
  2. Just select WWAHost.exe from the list and select Stop Task in the lower right corner of the Task Manager.

  1. Remove third-party browsers.
  2. Run Chkdsk.
  3. Disable the cloud protection in Windows Defender.
  4. Disable the Windows search indexer.
  5. Disable the Print Spooler service.
  6. Adjust the visual effects.
  7. Update the device drivers.
  8. Run the SFC and DISM.

WWAHost.exe is a secure and important process in Windows 8. It acts as a host for metro application processes, just as svchost.exe acts as a host for .dll files. This process is safe and is best left alone to keep your Windows 8 system running smoothly.