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.

Screenshot: key registration failed

Screenshot: Family Library Sharing

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?

  • Where are you trying to enter the Key? In game or via Steam (activate a game/product)?
    – Patta
    Sep 24, 2017 at 20:18
  • @Patta I entered it in the game Sep 24, 2017 at 20:23


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