How to fix "key already in use" for Trackmania² Canyon?

I bought Trackmania² Canyon via Steam. I think I was able to play regularly for some time (maybe a year ago).

I have then shared my Steam library with my son via the family library sharing and now it says

Key registration failed. This game key is already used.

When I look into the list of games that are excluded from Family Library Sharing, Trackmania² is not listed, so I think I should be able to play it on up to 10 PCs.

I have already tried:

I copied the CD key from Steam and inserted it in Trackmania again. Still the same issue

What can I do to play Trackmania² on my PC again?

Pictures about "How to fix "key already in use" for Trackmania² Canyon?"

How to fix "key already in use" for Trackmania² Canyon? - Concentrated African American technician wearing lab coat and conducting expertise of motherboard by using screwdrivers while working in service center

How to fix "key already in use" for Trackmania² Canyon? - Crop faceless man inputting cables in system unit

How to fix "key already in use" for Trackmania² Canyon? - From above of spatulas of different forms and sizes covered with spots of dye on dirty floor in daytime

How to find Uplay Activation Code (2018)

Sources: Stack Exchange - This article follows the attribution requirements of Stack Exchange and is licensed under CC BY-SA 3.0.

Images: Field Engineer, RF._.studio, Anete Lusina, Ksenia Chernaya

How to fix "key already in use" for Trackmania² Canyon?

Pictures about "How to fix "key already in use" for Trackmania² Canyon?"

How to find Uplay Activation Code (2018)

Related Topics