Connection Failed error 0:51001S:4688822970:0Q

EA_Leeuw​ Can someone update on this as this is happening more and more?

Well, finally broke down and opened a support ticket.  All I got was a canned troubleshooting response for troubleshooting I've already done.  Not one bit of troubleshooting other than a Google search and copy/paste troubleshooting steps from a canned response file.  Horrible 🤬

Hello friend

Penguin has seen some similar connection issues before. Sometimes the problem was caused by the Windows Antivirus or security features blocking the game connection.

After a Windows update, some security settings can change without any notice, then the game or the anticheat may not connect properly to the servers.

Penguin suggest trying a small test:

1: Check Windows security 👉 Virus & Threat Protection
2: Temporarily disable Real-time protection
3: Start the game again and see if the connection works.

If it works, then Penguin recommends adding the game and the anti-cheat folder as an exception in Windows Security instead of leaving protection off.

--- Post edited to add additional input---

If disabling the Windows Security features does not solve the problem, Penguin would try a few more things to isolate cause.

1: Run all of it  the Battlefield6.exe, EaAnticheat.exe, and Steam/EA App as Administrator. (Not only Battlefield 6.exe and EaAnticheat)
Depending on your network, sometimes the anti-cheat cannot access the network without proper windows permissions.

2: Repair or Reinstall the Anticheat system.

3: CMD admin command: 

netsh winsock reset
netsh int ip reset

Then restart PC.

4:  Penguin suggest checking checking Windows Firewall rules, especially if you recently had a Windows update.
Since sometimes the firewall blocks all sorts of .exe files & games.

5: If you can, try connect using either a mobile hotspot or different VPN. 
If the game works there, then it's highly likely that the issue could be with the ISP routing or router.

6: Update network card drivers and restart PC , sometimes EAAntiCheat service can block invalid driver signatures as that one operates at root level. (That's partly what secure-boot requirement is for)

7: Completely reinstall the game. 

If none of these work as they should cover most connection related hinders, Penguin would suspect a server sided issue or update problem as others have reported similar issue recently:

Similar issue👉  I havent been able to connect to servers in 3 days | EA Forums - 13240042

Hopefully this helps friend, as connection errors are very frustrating,
Good luck friend!
Penguin

ImPenguinFriend​ I've already done most of this, but will test with what I haven't done and update.  Might take a few days as I can connect and play without the errors, they're completely random.  Will update further once I've been able to test everything.

Thanks a bunch by the way!!

Try making another User Account in Windows....more than likely that will work.