Could not connect to master server / Unable to connect to auth server in Vintage Story — Fix

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Could not connect to master server / Unable to connect to auth server in Vintage Story — Fix

The problem

Some players in Russia may experience multiplayer connection issues in Vintage Story. The game may display one of the following errors:

  • Could not connect to master server
  • Unable to connect to auth server
  • Failed to connect to the authentication server

As a result, the server list may fail to load, login may not complete, and joining multiplayer servers may become impossible.

How to fix it

For most affected players in Russia, the issue is related to network access to several Vintage Story services. Using an "Internet accelerator" or configuring Zapret with the correct whitelist usually resolves the problem.

Zapret whitelist

Add the following domains to your whitelist:

Domain
moddbcdn.vintagestory.at
mods.vintagestory.at
www.vintagestory.at
vintagestory.info
vintagestory.at
masterserver.vintagestory.at
auth.vintagestory.at
auth2.vintagestory.at
auth3.vintagestory.at
media.invisioncic.com
account.vintagestory.at
account2.vintagestory.at
cdn.vintagestory.at
media.vintagestory.at

Increase the request timeout

Using an "Internet accelerator" or Zapret may increase network latency slightly. To avoid timeout errors, increasing the request timeout is recommended.

  1. Close Vintage Story.
  2. Open %AppData%\VintagestoryData\clientsettings.json.
  3. Find the webRequestTimeout setting.
  4. Set it to:

"webRequestTimeout": 60

Save the file and launch the game again.

Additional guide

If you use Zapret, this Zapret + WARP setup guide may also be helpful:

Zapret + WARP setup guide

After completing these steps, the errors Could not connect to master server and Unable to connect to auth server should disappear, allowing multiplayer services to work normally again.

Source

This guide is based on recommendations shared by DArkHekRoMaNT, a moderator of the Russian-language #russian channel on the official Vintage Story Discord server. You can read the original post here.