How to fix nProtect GameGuard update errors 340, 350 and 380
These mean GameGuard could not download its update, usually a firewall, antivirus or network problem, or the update being cancelled. Letting it patch fixes it. Jump to your situation below or work through the methods in order.
By Neeraj Singh ~6 min Updated Jun 2026 85% found this helpful
Error message
GameGuard Error 340: patches failed to download. Error 350: update cancelled. Error 380: connection or security software problem.
Summary
Errors 340, 350 and 380 are all GameGuard update and download problems. Error 340 means GameGuard's patches failed to download, usually due to network issues or an overly restrictive firewall. Error 350 means the update was cancelled, either because the Cancel or Abort button was clicked or the connection dropped mid-update. Error 380 points to a problem with your internet connection or security software (the related 360/361 mean the patch process failed or GameGuard did not install cleanly). The fixes are to allow GameGuard through your firewall and antivirus so it can reach its update server, do not click Cancel or Abort during the update and press Retry if the connection stalls, and check your connection is stable (a wired connection helps, and close other bandwidth-heavy apps). If the update still will not complete, delete the game's GameGuard folder so the launcher downloads a fresh copy, and try again later in case the update server is busy. Because these are download errors, restoring GameGuard's access to its update server resolves them.
What this error means
GameGuard updates itself from nProtect's servers before the game runs. Error 340 means those patches failed to download, Error 350 means the update was cancelled or the connection dropped, and Error 380 points to a connection or security-software problem blocking the download.
Restoring GameGuard's access to its update server fixes them: allow it through the firewall and antivirus, do not cancel the update and retry if it stalls, and make sure your connection is stable. Deleting the GameGuard folder forces a clean redownload if the update stays broken.
Common causes
A firewall or antivirus is blocking GameGuard's update download (Error 340).
The update was cancelled or the connection dropped (Error 350).
An unstable internet connection or security software (Error 380).
A corrupted or incomplete GameGuard patch.
Expert insight
“The 300s are all update problems, so I think about the download path. 340 is the patch failing to come down, almost always a firewall or antivirus sitting on it, so allow GameGuard through both. 350 is someone hitting Cancel or the connection dropping mid-update, so do not cancel it and press Retry. 380 is the connection or security software. If it still will not patch, delete the game's GameGuard folder and let the launcher pull a fresh copy, and try again later in case their update server is just busy.”
Manager, Tech Support & Operations · 19+ years fixing Windows and system errors
✓ How to fix it
Method 1
Allow GameGuard through firewall and antivirus
1Allow the game and GameGuard through Windows Firewall and any third-party firewall.
2Add them to your antivirus exclusions so the update is not blocked (Error 340).
3Relaunch and let GameGuard patch.
Method 2
Do not cancel the update, and retry
1Do not click Cancel or Abort during the GameGuard update (Error 350).
2If it stalls, press Retry and let it finish.
3Wait for the patch to complete before the game loads.
Method 3
Check your connection (Error 380)
1Use a stable, ideally wired, connection and close other bandwidth-heavy apps.
2Confirm no security software is blocking the FTP or HTTP download.
3Retry the update.
Method 4
Delete the GameGuard folder and retry later
1Delete the game's GameGuard folder so the launcher downloads a fresh copy.
2Or download GameGuard from the game's manual link and reinstall it.
3Try again later if the update server is busy.
GameGuard errors 340, 350 and 380 are update and download problems. Allow the game and GameGuard through your firewall and antivirus (Error 340), do not click Cancel or Abort during the update and press Retry (Error 350), and use a stable connection with no blocking security software (Error 380). Delete the game's GameGuard folder to force a clean redownload if it still will not update.
Frequently asked questions
What does GameGuard Error 340 mean?
It means GameGuard's update patches failed to download, usually because of network issues or an overly restrictive firewall. Allow GameGuard through your firewall and antivirus so it can reach its update server, then let it patch.
How do I fix Error 350?
Error 350 means the update was cancelled or the connection dropped. Do not click Cancel or Abort during the GameGuard update, press Retry if it stalls, and make sure your connection is stable so the patch can finish.
What causes Error 380?
Error 380 points to a problem with your internet connection or security software blocking GameGuard's download. Use a stable connection, close bandwidth-heavy apps, and make sure no firewall or antivirus is blocking the FTP or HTTP download.
How do I let GameGuard through my firewall?
Add the game and GameGuard to the allowed apps in Windows Firewall (and any third-party firewall), and add them to your antivirus exclusions. This lets GameGuard reach its update server and download its patches.
The update still fails, what next?
Delete the game's GameGuard folder so the launcher redownloads a fresh copy, or install GameGuard from the game's manual download link. If it still fails, the update server may be busy, so try again later.
Does a wireless connection cause update errors?
It can, if the connection is unstable or shared. Use a wired connection where possible, make sure nobody else is saturating the connection, and close other downloads so GameGuard can complete its update.
Still not working?
If updates keep failing on a known-good connection, a corrupted hosts file or a proxy can block GameGuard's server; check that your hosts file has no stray entries and disable any proxy, then retry. You can also submit your error to us for a tailored fix.