error code 14:136002S:-7A

I'm having the exact same problem, was working fine this morning, I've tried ipconfig /flushdns and other things with no luck. I'm think it's something with the game files because it says "couldn't load"

I get the same error code. Also accessing game through Steam on PC.

Same issue here. Also on Steam on PC. I have noticed that Steam also has an download for BF6 that I can't trigger that says "game not released".

It worked fine this morning but its been hours of troubleshooting since that initial success.

Same issue

Now got Connection Failed, Error code: 1:86001S:66003S:468882297O:0B

Got it working guys

Go into your installed files (in steam go to the game in your library>cog icon>manage>browse local files)

Open the folder "EAAntiCheat"

Right click EAAntiCheat.Installer and run as admin

Click repair

Then select the battlefield 6 folder in your common folder (just one folder back from when you clicked "browse local files"

That's what fixed my issue

tgthewizzard64​ Legend. This has worked for me. 
I will say before attempting what you have said I had:
Restarted my PC and Router.
Added Battlefield 6 through Windows firewall.
Set Steam, EA Launcher and Battlefield 6 to run as admin.
Removed all unnecessary USB devices from my PC.
Performed commands:
ipconfig /flushdns 
ipconfig /release
ipconfig /renew
netsh winsock reset

I managed to get into menu, but when it finds a match, he gets up and deadpan stares at me and nothing happens.

Thanks mate. Appears to have fixed mine too. Cheers!

When I did get into the menu this exact same thing happened to me too. First time I was able to retry matchmaking and got into a game, but since I get stuck there as well.