Windows 10: Can't login to Windows 10 and Microsoft Store

When I try to login in my windows 10, A grey screen comes after pressing Sign In button and Microsoft Account application closes after 20-30 sec. I have asked so much people and tried so much things but still not working. Please fix it..

:)

 

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

 

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Microsoft Selects Dolby Audio for Windows 10

it would've been great if microsoft added HEVC decoders, LAV filters along with other codecs with Windows 10, and developing WMP to be better than VLC, KMPlayer and such sorts of media players.

Nevertheless, this is good step for microsoft, by far.