I've got the same issue as cheeseit. Just tried to play as update and crash at start, then purged game, removed all files from documents, and redownloaded, ctd on start. Verified cache, no overlays, no mods, barebones. Other games working. Just... ctd!
I think this is a really fun game, I'd like to play it again!
I posted originally at around 3pm..
Coming back around 10:30 I read some of the fixes/workarounds, one of which was to try and load from the .exe (there's 2 one for multiplayer and one for single) located in the shipping client folder and this seemed to work. Upon loading I could see the graphic stutter pretty hard and went into the video options and it was set to my regular CPU, changed it to my GPU and everything seems... fine?
Still crashes when I try to launch from Steam, but at least I can play now. Maybe cheeseit can try this workaround for the moment? Still curious why my Steam won't load it but.. at least I'm in it again!
Here's the relevant bit that worked for me:
If none of the workarounds above helped you, you can try to launch the game via the TaleWorlds.MountAndBlade.Launcher.Singleplayer.exe and TaleWorlds.MountAndBlade.Launcher.Multiplayer.exe files located in the folder below:
“...:\SteamLibrary\steamapps\common\Mount & Blade II Bannerlord\bin\Win64_Shipping_Client”