You’re very welcome 
Disk cleanup.
How to
In windows search bar type
disk cleanup
Right click on it and select run as administrator
Select disk C and click ok
On the disk cleanup tab select all check boxes
Click “more options” tab and under “system restore and shadow copies” click “clean up”.
Click delete
Click “Ok”
Source https://forums.flightsimulator.com/t/install-over-a-ssd-and-hdd/409997/9