Windows Xp Registry Tips 7

Note: Modifying the registry can cause serious problems that may require you to reinstall your operating system. Use the information provided at your own risk.

Disable the Unread Mail Message on the Welcome Screen
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\UnreadMail\]
"MessageExpiryDays"=dword:00000000


Disable Compress Old Files (This is useful when Disk Cleanup Tool Stops Responding While Compressing Old Files)
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\VolumeCaches\Compress old files]


Windows Explorer Crashes When Opening Folder Containing avi/video files
[-HKEY_CLASSES_ROOT\CLSID\{87D62D94-71B3-4b9a-9489-5FE6850DC73E}]
[-HKEY_CLASSES_ROOT\SystemFileAssociations\.avi\shellex\PropertyHandler]
[-HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{87D62D94-71B3-4b9a-9489-5FE6850DC73E}\InProcServer32]


Disabling the File Association Web Service (when you click on unknon file it displays 'Windows can not open this file, ... Use the web service to find the appropriate program / Select from the Program list') (XP/Vista/7)
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\system]
"NoInternetOpenWith"=dword:00000001
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer]
"NoInternetOpenWith"=dword:00000001