[W8.1 Update 1] "Windows Store failed to sync machine licenses. Result code 0x80070490"

Hello,

Thank you for keeping updated about the issue and quick response.

Please answer:

• Have you checked the date, time and time zone of your computer, are they correct?
• Is your computer activated?

If issue still persists I would suggest you to try the below steps and check if it works.

Step 1:

Please go to the link given below, download the file and run it.

Run Apps Troubleshooter

Download and run the Modern UI App troubleshooter.

http://download.microsoft.com/download/F/2/4/F24D0C03-4181-4E5B-A23B-5C3A6B5974E3/apps.diagcab

Step 2:

I would suggest you to go through the link and follow the given steps. Here is the link for your reference.

What to do if you have problems with an app

http://windows.microsoft.com/en-GB/windows-8/what-troubleshoot-problems-app

Hope this would help. If issue still persists post back with current status of your computer and result of the proposed suggestion, we will be happy to assist you.

Thank you.

I checked the things you mentioned and everything is OK on my end. 

Disabling the scheduled task called WSRefreshBannedAppsListTask no longer produces an error event log entry.  Of course whatever this task does it no longer will be doing now that it's disabled.  Then again it didn't seem to work when enabled either according to the error message.

Hello,

Thank you for posting your query on Microsoft Community Forum.

I would appreciate if you can provide us the following information to figure out the root cause of the problem.

1. Have you checked the date, time and time zone of your computer, are they correct?
2. Is your computer activated?

I want to inform you that these are some changes in Windows 8.1 update.

This update includes the following new features and improvements:

• Enables a more familiar mouse and keyboard functionality for modern apps and controls.
• Improves the web application compatibility of the Internet Explorer 8 emulation mode in Internet Explorer 11 F12 Developer Tools.
• Increases performance and reliability when you use multi-display configurations for portrait-first device experiences.

For more information, I would suggest you to follow the steps provided in the below link.

What’s new in Windows 8.1 Update and Windows RT 8.1 Update?

http://windows.microsoft.com/en-us/windows-8/whats-new

Try to disable Windows Store in Task Scheduler and check if it helps.

1. Move the cursor on the bottom-right and select the search box
2. In the search box type Schedule Task and click on Settings tab.
3. In next step, you will see the "Task Scheduler" Window. You have to click on **"Task Scheduler Library"**from the left pane.
4. In this step, select Windows Store and click on Disable from the selected item category in the right pane.
5. In the next step check that Windows Store is disabled or not.

Hope this would do help. If issue still persists post back with current status of your computer and result of the proposed suggestion, we will be happy to assist you.

Thank you.