In most cases, the Star Citizen Error 70003 is related to the failure of a component in the Easy Anti-Cheat (EAC) authentication process.
Star Citizen Anti-Cheat Error 70003: If you play Star Citizen and have encountered the situation where you could not enter the game because of an obscure message saying, “Anti-Cheat Error 70003, Check Server Status,” you are in the right place. This error is what the people who play the game all over the world have to deal and grasping it can be a great time saver for you. We will dissect the whole thing by giving you explanations that are not complicated and step-wise instructions that you can easily understand and follow.
In most cases, the Star Citizen Error 70003 is related to the failure of a component in the Easy Anti-Cheat (EAC) authentication process. The EAC is the game’s anti-cheat system. It essentially could not verify your game session with the server. This however does not mean that you were cheating. The error can be caused by such things as problems with your connection to the server, server that is down, files that are corrupted, or even if the launcher is not working properly.
EAC is a mechanism that comes with many online games, one of which is Star Citizen, and is used to discourage cheating and prevent any unauthorized modifications. If it is not able to get a clear response from the RSI authentication servers, then the error in question is what it will display.
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The very first thing you need to do before troubleshooting your issues is to find out whether the problem is on the server-side. As the Error 70003 is often linked with situations in which the servers are down or there are some problems with the backend services, any attempts to solve the issue on the user side will be futile if the core servers have ground to a halt.
Here is what you can do to check the situation:
Head over to the official server status page: status.robertsspaceindustries.com By looking at this, you can tell the status of the Persistent Universe servers and authentication systems. If they are “Operational,” “Degraded,” or “Out,” will be the respective statuses shown for them.
Waiting is your option if it only indicates Partial Outage or Degraded Performance because, in this case, the problem is usually fixed within 30–60 minutes.
Besides that, people on Reddit and other community platforms also talk about the same issue during the same time and, thus, confirm that a server outage has taken place.
1. Server Problems
One of the scenarios when the backend services or AWS outages are causing the problem and hence the EAC handshake is interrupted.
2. Corrupted Anti-Cheat Files
On your computer, the anti-cheat executable files may be with an older version or even have viruses.
3. Time Sync Issues
The system clock on a user’s computer is a big factor in EAC operations as well. The slightest time difference might be enough to break authentication in such cases.
4. Launcher Cache Problems
The 70003 on startup can be caused by the data that is either abandoned or has some corruptions in the launcher.
5. Network/Proxy/VPN Conflicts
The reason for progressively worse EAC connections may be interfering from the VPNs, proxies, or being on an unstable network.
1. Restart & Reload the Launcher
Sometimes the simplest fix is the most effective:
a. Close the game and RSI Launcher completely (even from the system tray).
b. In the RSI Launcher, press:
Ctrl + Shift + R this forces a launcher reset.
c. Log in again and try launching Star Citizen.
d. This often clears corrupted authentication tokens.
2. Delete and Reinstall EAC Files
If the servers are online but you still get the error:
a. Close Star Citizen and RSI Launcher fully.
b. Navigate to your Star Citizen install folder (usually C:\Program Files\Roberts Space Industries\StarCitizen\LIVE).
c. Delete the EasyAntiCheat folder.
d. Relaunch the RSI Launcher and use Verify/Analyze Game Files, this redownloads fresh files.
3. Clear EAC Cache in AppData
Sometimes the launcher’s cached data causes issues:
1. Press Win + R, type %appdata% and press Enter.
2. Find and delete the EasyAntiCheat folder.
3. Relaunch the game launcher and try again.
4. Sync Your Windows Time
An unsynced clock can ruin authentication:
Right-click your system clock → Adjust date/time → Sync now.
Even a few seconds off can break the connection.
5. Disable VPN/Proxy/Conflicting Software
In case of VPNs or proxy services usage, it is better to turn them off temporarily as they can interfere with server handshakes.
Also, turn off overlays like Discord or GeForce Experience while trying the game.
6. Update or Reinstall the Launcher
It is said by some players that a fresh installation of the launcher only (which means not the entire game) is what actually makes the error disappear.
7. Advanced Options (if needed)
If the regular solutions to the problem have not yielded results:
Consider changing your public IP (get a reset from ISP). Some users mention that this operation solved their problem.
Start the launcher with Administrator privileges or simply put Star Citizen and RSI Launcher in your firewall/antivirus exception lists.
Before troubleshooting, always check if the issue isn’t simply server downtime, that’s the #1 cause of Error 70003.
If you’ve tried all fixes and still can’t get in, wait a bit. Many players report spontaneous resolution after servers stabilize.
If the problem persists for days, consider submitting a support ticket via the RSI Knowledge Base.
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