over 2 years ago - AndrewT - Direct link
Linwe said: This isn't a problem for the other paradox games, only for CK3 as it runs it's MP over Paradox Plaza.
Actually it uses the external Nakama MP service. Stellaris was the last game to use the PP service (but can use Nakama when you make the Crossplay choice). HOI4 and CK2 still use it.



We have three possible workarounds that may solve it:


Disable IPv6
- Close CK3
- Go to Control Panel > View Network status and tasks > Change adapter settings (left side)
- Find your Hamachi Connection and Disable it
- Find your Internet connection adapter (for me, it was WiFi)
- Right click your internet adapter and select properties
- Scroll down to find "Internet Protocol Version 6 (TCP/IPv6) and uncheck the box
- Select Ok
- Start up CK3 and should work.



Disable all other network adapters

  1. Go to Windows Control panel.
  2. Click on Network & Internet.
  3. Click on View Network Status.
    Quick Tip: You can also quickly access these settings by right-clicking the network icon in the taskbar and selecting the Network & Internet settings option.
  4. Click on Change adapter options.
  5. Right-click all network adapters that are not connected to the internet and select the Disable option.


Use a VPN

- Obtain a VPN

- Set the country to the US (why this works is also an enigma ><)

- Start the game

- Sign in and see if it "sticks"