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

  • Microsoft’s WWAHost.Exe (Microsoft WWA Host) is a program from Microsoft that allows you to run some Windows applications correctly.
  • The program was first introduced in Windows 8 and helped some applications to run JavaScript.
  • The problem is most likely related to a corrupted file, i.e.
  • Mail.
  • If you have a problem of high hard disk, CPU, or memory usage, you can reactivate the process by following these steps.

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Check Disk (chkdsk) is a Windows utility that checks the integrity of your hard drive. It can be used for various types of errors as well as to resolving issues that arise automatically.

A tool called DasHost.exe is installed by Partition Magic and it runs automatically after installation. There are a couple of ways to uninstall DasHost.exe without damaging your PC. This article will show you how. DasHost.exe is a malicious program that causes damage to your computer. We’ll show you how.

The file C:/Windows/System32/SettingSyncHost.exe is located in the Windows/System32 folder

The WWA Host process runs a JavaScript app hosted by WWAHost.exe using JavaScript.

It is not a virus and should not be removed. WWAHost.exe is a Microsoft program that assists with running some Windows applications.

Disable Msi Mode

Here is the procedure for disabling MSI from the registry for specific devices to fix 100% disk usage in Windows 10.

Edit: please do not try to convince me to use Linux, or ask me why I choose Windows. Those computers aren’t for me; I am responsible for preparing them and installing the software and hardware for others. I see these annoyances on a daily basis. They will be using Windows only for financial software. I can’t make the choice on their behalf for another operating system.

Windows 8 first introduced this program that lets some applications run JavaScript from the System32 folder. It’s an open-source utility you don’t need to install.

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

If a corrupted file is causing the WWAHost.exe to appear or consume a significant amount of resources after you open an application, it is probably Mail or another application.

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



Updated: February 2024

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I think this is a workaround rather than a solution. Simply terminating the process from the Task Manager should solve the problem. The process should no longer consume any resources once terminated.

Several metro apps running can be another possible cause of wwahost.exe using a high amount of CPU. In order for metro apps to work, wwahost.exe must be used. You may find that wwahost.exe connects to the internet on its own. This is also for metro apps. You’ll usually see wwahost.exe popping up in the Task Manager when you didn’t expect it.

Stop WWAHost.exe process

  1. Select Task Manager from the Start menu by right-clicking your Windows icon on your desktop.
  2. Using the pop-up window, scroll down to the WWAHost.exe process, then right-click to end it.
  3. The following steps can be followed once the CPU load issue with WWAHost.exe has been resolved.

Reinstall the Mail application and clear the cache

  1. When you open the Settings window, click the Applications tab.
  2. Find the target app by scrolling down on the right side of the window.
  3. Then click Uninstall.
  4. Complete the process by following the instructions on the screen.
  5. The Settings window should be closed after the uninstall has been completed.
  6. When you press Windows and R, you will see the Run window open. Type WSReset into it, then click OK.
  7. Once the cache is cleared, you can check whether it has been cleared.
  8. Check if the error is still occurring after clearing the cache by reinstalling the application and then running it.



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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.

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Mark Ginter is a tech blogger with a passion for all things gadgets and gizmos. A self-proclaimed "geek", Mark has been blogging about technology for over 15 years. His blog, techquack.com, covers a wide range of topics including new product releases, industry news, and tips and tricks for getting the most out of your devices. If you're looking for someone who can keep you up-to-date with all the latest tech news and developments, then be sure to follow him over at Microsoft.