This has been an issue that has been going on for the past couple of months. Whenever Overwatch will update, I will be unable to actually open the game.
I will press “Play”, it will turn to “Launching…”, then after about 10 seconds it will go back to “Play” with nothing actually opened, 50% of the time it will tell me there is an “Update”, but the “Update” only lasts for like, one second.
It usually resolves itself after a couple of days, however this time around it has been significantly longer as I’ve been unable to play the game for over a week. I’ve tried restarting my computer, using a different WiFi connection (Overwatch opens perfectly fine for my brother on his computer on the same WiFi), uninstalling and reinstalling, flushing DNS cache, as well as everything in this article (Blizzard Support - Overwatch 2 Doesn't Launch). I’ve sent in multiple tickets about this all telling me to do the same things I’ve done a hundred times before.
As I mentioned, this has been occurring for months EVERY SINGLE TIME I update the game. It is growing increasingly frustrating so I’d like a permanent fix to this.