Crashing when downloading from marketplace

Hey, there.

After a long break I decided to get back into MSFS. The installation process was totally fine, but when I started downloading the Nordics World Update from the marketplace, the game crashed. After that I tried to download the Paderborn-Lippstadt Airport to see if something is wrong with the Nordics World Update. Unfortunately, the game crashed again. The crashes usually happen 2 - 3 minutes after starting the download. The game does not crash when I load up an airplane and circle a few rounds around my beloved Berlin.

I appreciate any helping hand. Thank you.

Kind regards,