Like its previous versions Windows 10 also supports pinning certain objects to the taskbar for instant access like certain files, folders or any other kind of shortcuts. In order to do that you just need to click on the file and select pin to Start Option.
Some times Pin to Start option is not appearing in the context menu for supported files. If the Pin to Start option is not appearing when you perform a right-click on a folder, .exe file, or shortcut,
it’s likely because a policy named Prevent users from customizing their Start Screen has been turned on or another  policy named LockedStartLayout is enabled.



Restore missing “Pin to Start” option Using Registry Edit.

you can Download our prebuild Registry key to fix Pin To Start Missing Error on windows 10.  
          Download w10_pin_to_start.zip

Manually Edit Registry To fix This Error Step By Step.
Type regedit in the start menu or taskbar search box and press enter. This Will open Registry Edit windows Now Navigate to the following

HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer

On the right side look for the entry which says NoChangeStartMenu and delete it.



  Now go Back and  navigate to the following

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer




Look for the entry named LockedStartLayout right click on it and then delete it.

Now go to this key

HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\Explorer




Look for the entry named LockedStartLayout and delete it. Now Close Registry Window and Restart Windows. The pin to start option should now open when you right-click on an folder or file.

Restore missing “Pin to Start” option Using Group policy Edit.
Note : This method does not works in Home edition. It is only compatible for Windows 10 pro and Enterprise users.

 Type Gpedit.msc is the start menu or run command box and then press enter.Click yes for any User Account Control dialogue. This Will open Local Group policy editor window. Now on Then navigate to the following address

User Configuration > Administrative Templates > Start Menu and Taskbar

 On the left side look for Prevent users from customizing their Start screen policy and double-click on it to go to its properties.



 Click Disable button and then click apply.

  Now search for a policy called Start Layout and double-click on it to see its properties.

 Disable it and then click apply.



Now open Command prompt and Type Command gpupdate /force to forcefully apply the changes you have made on group policy editor.

Now Restart the system.

Troubleshooting using regsvr32 /i shell32.dll Command

Open RUN dialog box and provide following command:

regsvr32 /i shell32.dll



Restart your system and it should fix your problem.