A new Monster Hunter Rise PC patch is addressing a pretty significant hiccup that's been causing issues for first-time players on booting up the RPG game. It seems there was a bug that was causing the game to fail to "complete a proper save" when launching it for the first time, which meant it couldn't then start.
The new Monster Hunter patch - titled Patch Ver.3.6.1.1 if you want to be formal about it - was rolled out early on January 21, so if you're just about to dive in for the first time, you should hopefully not encounter the bug. If you did encounter it before the patch dropped, you'll just need to to follow a few steps developer Capcom has laid out after applying the patch to get things working smoothly.
This involves, first, disabling Steam Cloud and quitting out of the game, which you can do by unticking the check mark under the Steam Cloud section the game's properties (in 'General'). You'll then need to do a bit of local file deletion, re-booting the game to create new save data, hopping back out to re-enable Steam Cloud functioning, and uploading local files to the Steam Cloud. There are clear step-by-step instructions on exactly how to do this in the patch notes, so be sure to follow those carefully.
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