ctrl+alt is equal to alt gr

Here is a tips if you are using Microsoft Remote Desktop or some other applications that might give this problem.
On my Swedish keyboard I use the alt gr button to enter characters like \, @, £, $, and ~
Sometimes this doesn't work when using Remote Desktop but a workaround is to use ctrl+alt instead of alt gr.
It took some time before I found out this solution so I just wanted to share it in case you too have had this problem.