Cleaning Recent Docs Menu and the RUN :

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The Recent Docs menu can be easily disabled by editing the Registry. To do this go to the following Key: HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer Now in the right pane, create a new DWORD value by the name: NoRecentDocsMenu and set it's value to 1. Restart Explorer to save the changes. You can also clear the RUN MRU history. All the listings are stored in the key: HKEY_USERS\.Default\Software\Microsoft\Windows\CurrentVersion\Explorer\RunMR U You can delete individual listings or the entire listing. To delete History of Find listings go to: HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Doc Find Spec MRU and delete