Hi,
Ive been having this issue for quite sometime time.
When booting up Hearthstone, if i enter a boss in Solo, Ranked, My Collection, My Quests. It just stops.
I can access the menu in the right bottom corner to close the game.
Sometimes it just crashes while booting up, sometimes with an error message (Card cashe value=1).
Sometimes this trick can let me play.
Go into solo adventure, press on a boss (But not the character selection option).
Press another boss, and then another (best luck is different adventures).
Then after 5-6min of jigling with bosses, play one. If that succeds then it is all good for this session.
Things ive done for troubleshooting:
Cleared Blizzard entertainment in appdata
Reinstalled the whole game a few times
Scan & repair
Please send assistance.
Using Windows 10 desktop