How to Clear the Windows Explorer MRU Lists
To clear the MRU lists in the registry, delete all the values except "(Default)" under each of the following registry keys:
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Doc Find Spec MRU
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FindComputerMRU
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\PrnPortsMRU
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\RunMRU
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\StreamMRU
Registry key Description
-----------------------------------------------------
Doc Find Spec MRU MRU for the Find Files command
FindComputerMRU MRU for the Find Computer command
PrnPortsMRU MRU for printer ports
RunMRU MRU for the Run command
