Unable to use built-in program solution after upgrading Win10

The built-in program resolution cannot be used after upgrading Win10. Less than three months from the end of the free upgrade Win10, there are also many users have upgraded to Win10 in the first time, but found that the built-in application of Win10 can not be opened, what is the reason for this, in fact, this is because there is no Log in to the Microsoft account. Next, Xiaobian also explained the solution that the built-in level cannot be opened after upgrading Win10. I hope to help everyone.
Method 1: Switch Microsoft account
to Microsoft's official website to register Microsoft account, use Microsoft account to log in to the system.
Note that after using the Microsoft account, Win10 will log in to the system as a Microsoft account. If you switch back to the local account, you can no longer use which built-in programs.
Method 2: Change the permissions
1, here explain the second method in detail. After pressing Win+R to enter the "Run" window, type gpedit.msc and hit enter.

Run gpedit.msc
2, click [Computer Configuration] → [Windows Settings] → [Security Settings] → [Local Strategy] on the left side of the pop-up Local Group Policy Editor dialog box. 】→[Security Options], on the right side, find [User Account Control: Administrator Approval Mode for Built-in Administrator Account] (the system defaults to [Disable]).

Local Group Policy Editor
The above is the way to open the built-in program after upgrading the Win10 system. Using the second method, you can use the built-in application even if you log in to the Win10 system under the local account. .