The game client hard codes this path. On Windows it will be under C:\\Users\\<Username>\\Documents
On OS X it will be /Users/<<Username>>/Documents.
jimbo96preub18_ESO wrote: »%HOMEPATH%\Documents is the short-cut path for Windows PCs and should point to locations when you have mapped users folder to another drive.
Out of interest. Could you use a tool such as Process Monitor (http://www.sysinternals.com/) and then try to see where ESO tries to write to?
You should be able to set a "Process Name" filter to "eso.exe" and a second filter to only show entries with "UserSettings.txt".
The folder isn't called Documents, it's called My Documents. (Documents is the library.)