"HOST REJECETED" when trying to connect

:arrow_forward: GAME INFORMATION

  • BUILD #: v.100.12.11148.0
  • PLATFORM: Steam
  • OS: Windows 10

:arrow_forward: ISSUE EXPERIENCED

  • I am unable to join any multiplayer games. I keep getting a “HOST REJECTED” error message while connecting. It doesn’t matter if I host or they host:
  • If I host they will get a “HOST REJECTED” error message – but they CAN play with others.
  • If they host I get a “HOST REJECTED” error message.

Under Steam I have also verified “Local Files” via “Verify integrity of game files” and no issues are detected. i.e. “All files successfully validated”.

:arrow_forward: FREQUENCY OF ISSUE

  • 100% of the time / matches I play (ALWAYS)

:arrow_forward: REPRODUCTION STEPS

  1. Start AoE3:DE
  2. Shift-Tab to bring up the Steam’s Friends List
  3. Right Click on the a friend’s name
  4. Join Game

:arrow_forward: EXPECTED RESULT

Actually join the lobby.

:arrow_forward: ACTUAL RESULT

I keep getting a “HOST REJECTED” error dialog with ZERO description on what the problem is or how to fix it.

:arrow_forward: GAME FILES

  • n/a

:arrow_forward: IMAGE & ATTACHMENTS

  • n/a

Game is full, or the person blocked you.
easy done.
Otherwise it could be your antivirus programm blocking you from connection to other people.
If that doesnt help, try turning on a VPN.

Game is full,

Nope. I already said it happens if I host.

or the person blocked you.

Nope. Only playing with friends.

antivirus program blocking you from connection to other people.

Nope. It is turned off. Antivirus doesn’t block incoming connections – that is the job of the a firewall. Windows Firewall has AOE3 listed and connections are allowed on both private and public for AoE3DE_s.exe and BattleServer.exe.

try turning on a VPN.

The problem is with the bad lobby networking code – a VPN isn’t needed. I am able to play AoE2:DE and every other multiplayer game just fine – it is ONLY AoE3:DE that is having an issue.

FINALLY figured out a solution.

Cause: The Event Challenge installs the Winter Wonderland mod. The garbage error message “Host Rejected” doesn’t actually describe the actual problem: Incompatible mods between the host and clients.

Solution: Tools > Mods > uncheck Winter Wonderland


Didnt work for me, didnt have the mod installed. Any other solutions?
EDIT: Fixed had missing files when i did a “Verify integrity of game files”