The Start Menu made a welcome return in Windows 10 and it’s now the main way to get things done in the new operating system. Some Times we saw Windows 10 Start menu has the irritating habit of not opening when you click the Start button or press the [Windows] key on the keyboard.

Recommended : How To fix Windows 10 Critical Error Start Menu Cortana aren't working 


The problem usually causes the Search box to freeze, too.This Type of problem happen  when Windows Updates are being installed.  If you are facing this issue, here are few troubleshooting steps you may want to try out.

Fix Windows 10 Start Button with Windows Task Manager

To open Windows Task Manager, press CTRL, ALT and DELETE (DEL) together at the same time on the keyboard of your computer and click on "Task Manager".
click on "More details" to see "Windows Explorer". Right-click on "Windows Explorer" and then click on "Restart".



Before you proceed, some of you may want to create a system restore point first, so that you can revert back, if you find that the results are not what you expected.

See : How To Create System Restore Point On windows 10
Reinstall Windows apps
Launch the Task manager - click on file and select New task - Type Powershell - Tick on Run This Task with Administrative privileges
When the Windows PowerShell window opens Type Bellow command and press Enter.

Get-AppXPackage -AllUsers | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppXManifest.xml"}


Wait until the app download and installation process completes — ignore any red text that appears — and restart Windows.

Hopefully the Windows 10 start menu will work again when it's finished.
Create a new user account 

  
Recommended:  How To Create A User Account in windows 10

Open Task manager (see above) and select Run new task from its File menu.
Tick the box for Create this task with administrative privileges and type net user NewUsername NewPassword /add in the box.
You’ll need to replace NewUsername and NewPassword with the username and password you want to use
Login With New Created User Check the Problem is Solved.

Repair Windows Image. 

Open an elevated CMD copy-paste the following and hit Enter

Dism /Online /Cleanup-Image /RestoreHealth

Then perform a system File check


Open command prompt with Administrative pervilage Through Task manager And Type Following command.   sfc /scannow

The sfc /scannow command will scan all protected system files, and replace corrupted files with a cached copy. Scanning process Will Take some Time Restart system after the scan is over and see if it helped.

Fix Windows 10 Start Button with a Batch File

You can also fix the problem by creating a simple batch file with Windows Notepad.

The advantage of a batch file is that you can leave it on your desktop or other easy to access location on your computer and when the start button doesn't work anymore, you only have to double-click on that file to fix the problem.


Just follow these simple steps:

Open Windows Notepad. Type Following Text

taskkill /f /IM explorer.exe
start explorer.exe
exit

Click at the left-top of Notepad on "File" and choose "Save As..."
At the left-sidebar you can choose a location on your computer where to save the file.
At "Filename" you give the file a name but with .bat at the end.

For Example : start button fix.bat

Right-click at Start and run Command Prompt as Admin
Type command:
ren %windir%\System32\AppLocker\Plugin*.* *.bak
Restart Windows

Start Application Identity service:

Right-click at Start and click RUN
type SERVICES.MSC and press the enter key
right click on APPLICATION IDENTITY and select START

Refresh your machine


Right click on the START button
Hold the shift key while selecting RESTART
Select TROUBLESHOOT from the recovery menu
Select REFRESH YOUR PC
This will reinstall Windows 10 but it will keep all of your files (Documents, Pictures…) but it will kill all of the programs that have been installed.  Everything that is dead will be in C:\WINDOWS.OLD so you can fish out anything that is missing, but you will have to reinstall your programs, like Microsoft Office.





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