Yesterday svchost.exe started using high CPU (25% continuously)

I did some research a figured out the case of the issue. The following error is in the Event Viewer every half an hour since this issue started.

Activation of app Microsoft.BingWeather_8wekyb3d8bbwe!App failed with error: This app does not support the contract specified or is not installed. See the Microsoft-Windows-TWinUI/Operational log for additional information.

The TWinUI/Operation log has the following two errors alternating every half an hour:

The app Microsoft.BingWeather_8wekyb3d8bbwe!App is not registered for the Windows.BackgroundTasks contract or is not installed.

Activation via contract helper of the app Microsoft.BingWeather_8wekyb3d8bbwe!App for the Windows.BackgroundTasks contract failed with Class not registered.

I’ve tried the following:

  • Launch and close the weather app. It works correctly.
  • Added “ALL APPLICATION PACKAGES” read & execute access to %AppData%\Local\Packages
  • Added an account to the windows store
  • Ran windows store troubleshooting and reset the windows store
  • Ran a full antivirus scan and Malawarebytes scan. Both found nothing.
  • Restart after each of the above options.
  • Running shell commands for window store. This returned the below error. ‘C:\WINDOWS\WinStore\AppxManifest.xml’ does not exist AppxManifest not found OS: Windows 10 Pro
    Version: 1607
    OS Build: 14393.1066
  • use 1703 ISO to upgrade to Creators Update, this reinstall all apps Commented Apr 22, 2017 at 15:48
  • any update? Have you upgraded to 1703? Commented May 1, 2017 at 7:08
  • @magicandre1981, I'm a little busy right now as. I'll post an update as soon as I try this. Probably last weekend of May or first weekend of June. Commented May 2, 2017 at 14:22
  • I’m back from vacation now so I tried this out. I reinstalled windows saving apps and data via this link: microsoft.com/en-us/software-download/windows10 This did not fix the issue. Then I tried restarting, updating the OS and restarting again. This still did not fix the issue. Then I noticed that Microsoft now lets me uninstall the app despite it being one of the apps which came with windows. I tried uninstalling and reinstalling the weather app. This did not fix the issue. Then I tried uninstalling the app and did not reinstall. This finally fixed the issue. Commented Jun 5, 2017 at 2:27
  • hm, I personally don't use this app garbage so I have no real idea how to really fix this. Commented Jun 5, 2017 at 7:00

1 Answer 1


A future windows update gave the ability for me to uninstall this app. After I uninstalled the app this issue was fixed as long as I didn't reinstall it.

I believe this was the May 2017 update.

  • 1
    A Windows update removed your ability to install the app after which you uninstalled the app? That doesn't make sense; can you edit to clarify? Further, instead of saying a "future" update, please be more specific about exactly which update you're referring. Commented Dec 4, 2018 at 0:19

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