When you install Microsoft Office, by default it will leave a folder of installation files on the C: drive. You cannot delete this folder because every time MS Office needs to update itself, it uses those files.

With the MS Office 2013 edition, I have a folder with 830MB of files! On a small SSD, this is precious space that needs recovering. So what to do?

One trick I came across today is to move those files to another disk and create a symbolic link to them:

mklink /D "C:\MSOCache" "D:\MSOCache"

And that’s it!