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How to Fix Astrum Play Error 403 in Throne and Liberty

Lucas Harrison By Lucas Harrison
date Last updated: 21 May, 2026 clock 4 min

Getting a 403 error from Astrum Play before even entering the game is frustrating. You're ready to play, but the launcher blocks you with no clear explanation or fix.

This problem is becoming more common among Throne and Liberty players. Some get the error during login, others while loading the launcher, and some can't connect to the server at all. The good news is that it's usually fixable.

This guide covers several ways to fix Astrum Play Error 403, including one solution many players overlook: network optimization.

Throne and Liberty Game Booster

What Is Astrum Play Error 403?

A 403 error normally means "Forbidden." The server received your request but decided not to allow access. Sounds simple, but in gaming launchers things are rarely that clean.

With Astrum Play, the 403 issue can happen because of several different reasons:

  • Server authentication failed
  • Your connection timed out
  • DNS requests were not resolved correctly
  • The launcher cache became corrupted
  • Firewall software blocked verification
  • Regional routing triggered security filters
  • Temporary launcher maintenance happened in the background

Sometimes players assume they got banned immediately. Most of the time, that is not the case.

Astrum Play relies heavily on stable communication with authentication servers. If packets are delayed or rerouted badly, the launcher may treat the request as invalid. That alone can trigger the Astrum Play Error 403. This error doesn't just occur on Throne and Liberty's Russian servers; in fact, servers around the world can experience it.

How to Fix Astrum Play Error 403 in Throne and Liberty

How to Fix Astrum Play Error 403

There is no magical one-click fix. Different players solve the problem in different ways. Still, these methods work for most situations.

Restart the Astrum Play Launcher

It sounds basic, but it helps more often than expected. Completely close Astrum Play first. Do not just click the X button. Open Task Manager and end all launcher-related processes. After that:

  1. Relaunch Astrum Play
  2. Log in again
  3. Wait a minute before retrying

Long idle sessions sometimes break authentication tokens. Restarting refreshes them.

Use GearUP to Stabilize the Connection

Many players focus only on reinstalling the launcher. Sometimes the bigger problem is the route between your device and the authentication server. That is where GearUP becomes useful.

GearUP is designed to optimize gaming connections and reduce unstable routing issues. Instead of letting your ISP randomly choose overloaded paths, GearUP helps direct traffic through more stable gaming routes.

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For Throne and Liberty, this can help with:

  • Launcher login failures
  • Authentication timeouts
  • High ping spikes
  • Packet loss
  • Server connection instability

And you only need a few simple steps to reduce the occurrence of the 403 error:

  1. Search for Throne and Liberty.
    Throne and Liberty WorldServer Disconnected Fix
  2. Select the Russian server.
    Throne and Liberty WorldServer Disconnected Fix
  3. GearUP begins optimizing the connection. Leave it running in the background and launch the game.
    Throne and Liberty WorldServer Disconnected Fix

Avoid Being Restricted by the Firewall

Security software sometimes blocks launcher verification systems by mistake.

Try disabling your firewall briefly and then launch Astrum Play again. If the error disappears, add the launcher to your whitelist before turning protection back on. The steps are very simple:

  1. Press the Windows key and type "Firewall."
  2. Click Windows Defender Firewall.
  3. Click Allow an app or feature through Windows Defender Firewall.
  4. Click Change settings, then Allow another app.
  5. Click Browse and navigate to the Throne and Liberty installation folder.
  6. Select the game's executable file and click Add.
  7. Make sure both Private and Public checkboxes are checked.
  8. Click OK to save the changes.

Ensure Your Local Network Connection Is Stable

Here are some simple steps anyone can follow:

  1. Use a wired connection — Plug an Ethernet cable from your router directly into your PC or console. It's faster and more stable than WiFi.
  2. Stay close to the router — If you must use WiFi, move closer to the router and avoid walls or obstacles in between.
  3. Restart your router regularly — Unplug it for 30 seconds, then plug it back in. Do this once a week to keep it running smoothly.
  4. Reduce connected devices — The more devices on your network, the less bandwidth your game gets. Disconnect devices you're not using.
  5. Pause downloads and updates — Make sure no other apps or devices are downloading large files while you play.

Final Thoughts

So rest assured, Throne and Liberty's 403 error is not a serious problem (most of the time). By following the steps in this article, including restarting, using GearUP to optimize your network, and improving your local network connection, you can usually resolve it easily. Don't let it become a barrier to enjoying the game. Try it now.

About The Author
Lucas Harrison Lucas Harrison

Lucas Harrison is GearUP’s PC game expert and a veteran media professional with many years of experience. He is well versed in the various network issues that affect PC games and has extensive insights into solving them, having proposed numerous suggestions for optimizing GearUP’s PC version. He currently serves as GearUP’s Content Creation Lead, primarily responsible for writing GearUP’s PC network optimization guides, which aim to help players understand the problems they’re facing and provide practical, effective solutions through clear, easy-to-follow guidance.

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