A. By default, the DLL cache is stored in \%systemroot%\system32\dllcache. To move the DLL cache, complete the following steps:

1. Start the registry editor (regedt32.exe not regedit.exe).
2. Move to HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\Winlogon.
3. From the Edit menu, select Add Value.
4. Set the name to SFCDllCacheDir and the type to REG_EXPAND_SZ. Click OK.
5. Enter the string for the cache’s new location (e.g., C:\files\dllcache), and click OK. (The location must be a local path.)
6. Close the registry editor.
7. Reboot your machine.