Press Win + R to the Run box 

Type lusrmgr.msc 

Click OK to open Local Users and Groups.

Select the Users 

Right-click on the Administrator user account and select Edit

In the General tab, uncheck the Account is Disabled option.

Click Apply.

Open Command Prompt as administrator 

Copy (CTRL +C) and paste (CTRL + V):

To Enable: "Net user Administrator /active: yes"

To Disable: "Net user Administrator /active: no"

Open Windows PowerShell  as administrator

Copy (CTRL +C) and paste (CTRL + V):

To Enable: "Enable-LocalUser -Name “Administrator"

To Disable: "Disable-LocalUser -Name “Administrator”

Press Win + R to open the Run box. 

Type gpedit.msc and hit Enter to launch Local Group Policy Editor 

Navigate to the following path:  "User Configuration\Administrative Templates\Start Menu and Task "

In the right pane, double-click on Prevent users from uninstalling applications from Start

Press Win + R to open the Run box. 

Type regedit.exe and hit Enter to open Registry Editor. 

 Navigate to the following path to locate the Explorer key: "HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\Explorer "

Right-click, select New 

Click DWORD (32-bit) Value and rename to NoUninstallFromStart 

Double-click on NoUninstallFromStart just created and then change the value data to 1

click OK and Restart

Open Command Prompt as administrator 

Copy (CTRL +C) and paste (CTRL + V):

1st "FOR %F IN ("%SystemRoot%\servicing\Packages\Microsoft-Windows-GroupPolicy-ClientTools-Package~*.mum") DO (DISM /Online /NoRestart /Add-Package:"%F") "

Wait for completion then Copy and past: 

2nd "FOR %F IN ("%SystemRoot%\servicing\Packages\Microsoft-Windows-GroupPolicy-ClientExtensions-Package~*.mum") DO (DISM /Online /NoRestart /Add-Package:"%F") "

Wait for completion then Restart