WARNING: This post involves playing around with your operating system’s registry. You use this information at your own risk. For other warnings, please see the disclaimer.
I’m a big fan of Windows’ offline folder caching and have used it on my laptops for over a decade. One thing I don’t like about it, however, is how difficult Microsoft has made it for the cache to be moved out of the Windows folder. (By default, it’s found at \Windows\CSC).
WARNING: If this isn’t a FRESH installation of Windows, make sure you have synchronized your offline files. This procedure will ERASE ALL EXISTING OFFLINE FILES AND FOLDERS!!!
In order to move the cache, follow these steps:
1. Clear the content of your existing cache
Yeah, you have to do this. And, it’s not a very obvious procedure. You end up creating a registry key that resets the cache at startup and then deletes itself. Here’s the command to create the registry key (you can do this at a command prompt):
REG ADD “HKLM\System\CurrentControlSet\Services\CSC\Parameters” /v FormatDatabase /t REG_DWORD /d 1 /f
Once you’ve done this, reboot.
2. Create the folder in the location where you’d like to have your cache
I always like to keep my data separate from my OS by storing it on a different drive (or, at the very least, a different partition). For this example, I’m using the path X:\Data\Cache
3. Create a new registry value
Open Registry Editor and browse to:
This is the same key we modified before. Notice how there’s no “FormatDatabase” value even though we added it prior to the last reboot.
Right-click on Parameters, hover on New and select String Value:
Name the new string value “CacheLocation”:
Double-click on CacheLocation and input the path to the new cache location and then click “OK”:
Notice the “\??\” in the value. This is an NT Object Path used by the OS to reference the local path. (If it was “\??\UNC\, it would be referencing a network path.) You must use this format.
You’ll see the value populated now in your registry editor:
Once the OS is back up, it should be using the new location. You can test this by opening the new folder and you should see a folder in there called “v.2.0.6”. You should get a permission error if you try to open that folder.
I hope you find this useful! If you see anything wrong, please let me know.