Windows 10: Windows cannot open start menu, taskbar items, cortana, or any windows 10 universal apps

Settings won't open, cortana won't open, and the taskbar is always visible even in fullscreen mode.

I ran a SFC system scan, nothing...


when i open a windows store app, it gives this error message:


explorer.exe


class not registered

:)

 

Windows 10 Tweaks

As you may already know, Windows 10 (as well as Windows 8) allow you to log in with a valid Microsoft account, instead of creating a local account that only works on your machine. However, you may prefer to keep a local account for privacy reasons. If you do, though, some Windows 10 features—like Cortana—may not work. Despite the default behavior, the Windows 10 Store is not one of them. You can still log in to your Microsoft account for just the Store without switching to a full Microsoft account. The process, however, is not terribly obvious. To do so, follow these steps:

• Launch the Store from your Start menu.
• Click the user icon next to the search box.
• Click “Sign-in” from the menu that appears.
• Choose “Microsoft account” and log in like normal.
• When the “Make it yours” box appears do not enter your password. Instead, click “Sign in to just this app instead.”

from Lifehacker

 

Windows 10 Pinned item not working HELP!

Delete the account/profile.

Or try this. You have a os update or a piece of software doing this.
https://www.google.com/search?q=pin...ms-tmobile-us&sourceid=chrome-mobile&ie=UTF-8

Re-register Start Menu in Windows 10

Last resort reinstall windows.

 

"Store and display recently opened items in the Start menu and the taskbar" Registry in Windows 10

Hi Willy,

Before we assist further, did you try enabling/disabling the option from system
Settings window?

If haven’t tried, try enabling/disabling “Store and display recently opened items in the Start menu and the taskbar” by following the steps below and check if the issue is resolved.

• Press Windows logo + I keys on the keyboard to open
  Settings window.
• Select Personalization and click on Start from the left side panel of the window.
• From the right side panel of the window, slide the toggle bar to
  On/Off under Show recently opened items in Jump Lists on Start or the taskbar.
• Close the window and check if the changes are effective.

Write to us with the status of registry fix to disable start and taskbar list shown on the computer in the same post for further assistance.
Your reply is most important for us to ensure we assist you accordingly.

Thank you.