Using the DLL Cache to Protect System and Program Files

• Microsoft Windows 2000 Advanced Server
• Microsoft Windows 2000 Datacenter Server
• Microsoft Windows 2000 Professional
• Microsoft Windows 2000 Server

SUMMARY

The dynamic-link library (DLL) cache is used to replace necessary system files at startup. The DLL cache can replace critical DLL files that have been replaced by third-party programs or accidentally deleted. The DLL cache runs at startup and replaces necessary DLL files from the %SystemRoot%\System32\Dllcache folder.

You can also use the DLL cache to replace other system and program files at startup to ensure that files are not overwritten by programs or accidentally deleted.

MORE INFORMATION

To Add Files to the DLL Cache

1. Place a copy of the file you want to protect in the %SystemRoot%\System32\Dllcache folder.



2. Create a corresponding value in the following registry key:

   HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\SessionManager\ProtectedDlls

   The new value should have the following syntax

   Value name: filename
   Data type: REG_EXPAND_SZ
   String: path\filename

   where filename is the name of the file to check and replace, and path\filename is the full path and name of the file to check and replace.
   

Additional query words: c00002d1

Keywords : kbenv
Version : WINDOWS:2000
Platform : WINDOWS
Issue type : kbhowto