How do I invite friend ? Steam<>MS Store


I bought AOE2 Definitive 4 days ago on Steam. My friend bought it on the 21st of december on MS store.
Now it seems almost impossible to join eachothers game. I think it’s because we have different updated version. But it like impossible to get latest version via MS Store. I googled this and found lots of troubleshooting in this manner but no clear solution.
So… I there somebody here who can help or direct me to a clear solution? Or is it just impossible to solve this??

Many thanks in advance!

Same prob, it’s not the same version and we can’t play together