Normally when you open or access a document or file it is added to the list of recent documents on the Start Menu. This tweak will stop files from being added to the list.
1. Open your registry
2. Go to this location:
System Key: [HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\]
3. now click on edit >>new>>dword 32 bit
4.create a new dword
Value Name: NoRecentDocsHistory
Data Type: REG_DWORD (DWORD Value)
Value Data: (0 = disable restriction, 1 = enable restriction)
we will enter 1 to enable restrictions on recent document history
Exit your registry, you may need to restart for the changes to take effect.