this software cannot be used at the same time as the game.......Proxifier

#anticheat, #proxifier, #launcherrorHi,
I’m trying to launch Battlefield 6on PC, but the game refuses to start.
I get an error message that mentions “Proxifier” and the line “-DiceOnline.StemBetaBranchNamePrefix”.

The problem is:

I don’t have Proxifier installed.
Nothing proxy-related or suspicious is running in the background.
I already reinstalled EA Anticheat (Javelin) and verified the game files.
I’m not using any VPN, antivirus, or overlay software that could interfere.

It seems the game or EA Anticheat is misreading a leftover developer or beta parameter from an earlier build.
That exact parameter (“DiceOnline.StemBetaBranchNamePrefix”) sometimes appears when a beta or pre-release version was installed before.

Things I’ve already tried:

Reinstalled EA Anticheat to the default folder: C:\Program Files\EA\AC
Cleared caches from %appdata%, %localappdata%, and %programdata%\EA
Removed any launch options in Steam and EA App
Checked Windows proxy settings (no proxy active)
Rebooted and launched as Administrator

Still, the error persists and the game won’t start. EA Anticheat keeps thinking Proxifier is running when it isn’t.

Question:
How can I completely remove the “-DiceOnline.StemBetaBranchNamePrefix” parameter or any leftover developer flags that cause EA Anticheat to block the game?
Is there a specific config file or registry entry that Battlefield 6 uses for these internal flags?

Any official steps or clarification from DICE or EA Support would be greatly appreciated. It seems like more players might run into this after today’s launch.

Thanks in advance!