TweakXP: Remove All Temp Files w/ Disk Cleanup utility

By altering the LastAccess value in the registry, you can configure the Disk Cleanup utility to delete all the files in the Temp folder regardless of the last accessed date. Here's how:

1. Launch the Registry Editor (Regedit.exe).
2. Go to
   

   HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\
   Explorer\VolumeCaches\Temporary Files 

3. Locate and double-click the LastAccess value.
4. When you see the Edit DWORD Value dialog box, change the Value Data setting from 7 to 0 and
5. click OK.
6. To complete the operation, close the Registry Editor and restart Windows XP.

Changing the value to 0 will force the Disk Cleanup utility to delete all the files in the Temp folder every time that you select the Temporary Files check box.

Notes: Since editing the registry is risky, be sure you have a verified backup before saving any changes. This tip applies to both Windows XP Home and Windows XP Professional.

[1]  http://articles.techrepublic.com.com/5100-10877_11-6168868.html?tag=nl.e064 [2]