I can't repair Minecraft Luncher

Hi
I have problem - I cant't play in minecraft dungeon. Almost everyday I have to repair a game. Almost everytime someting goes wrong and game can't be repaired.

When I want to play Minecraft Dungeons, I use Microsoft account.
When I want to play Minecraf, I use Mojang account. It works fine.
When I’m logged into a Microsoft account, then there is a information.... repair.
Send me a information, why have I problem, and write me how to fix that.