How to Solve: ‘Connection Error Detected’ in Guild Wars 2

  • The “Connection Error Detected” problem occurs when Windows users try to open Guild Wars Launcher in normal or recovery mode.
  • The problem has been detected on Windows 7, Windows 8.1, and Windows 10.
  • You may not be able to connect to Guild Wars 2 servers because your system’s security software is denying you access to the game’s network.

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A password is required for connection screen in express outlook

You can do it however you like. I am genuinely curious about players who have crashed OOM using the 64bit client with 8 gigabytes of RAM. I have only come across one such post and most claim that the crashes have completely stopped. It was clear in that case that another cause was responsible for the error in the log.

A massively multiplayer online role-playing game, Guild Wars 2 was developed by ArenaNet and published by NCSoft and ArenaNet in Tyria, a fantasy world. The game is set in a disbanded guild dedicated to fighting the Elder Dragons, a Lovecraftian species that overtook Tyria after the first Guild War. A persistent world is the setting for this game, which features instanced environments that develop the story.

The Guild Wars 2 servers may not be connecting to you. The “Connection Error Detected” error message has been affecting users. In Windows 7, Windows 8.1, and Windows 10, the “Connection Error Detected” problem occurs when the Guild Wars Launcher is opened in normal or recovery mode.

What is the Cause of the “Connection Error Detected” Message in Guild Wars 2?

Guild Wars Starter crashes when users attempt to open it in Windows 7 or Windows 8.1 recovery mode. Windows 10 appears to be affected by the “Connection Error Detected” error.

Firewall failure: These two ports (80 and 443) may be blocked by your firewall. If this scenario applies, you can configure whitelisting rules specifically for these two ports or remove the third-party package that is causing the problem.

In most cases, the Dynamic Host Configuration Protocol (DHCP) will automatically configure your system to use the IP addresses of your provider’s name servers. To use Google Public DNS, you must explicitly change the DNS settings of your operating system or device to use Google Public DNS IP addresses. The process of changing the DNS settings depends on your operating system and version (Windows, Mac, Linux or Chrome OS) or device (computer, phone or router). We provide general procedures here that may not apply to your operating system or device; please refer to the supplier’s documentation for reliable information.

Ports 80 and 443 are blocked: This set basically relies on the 2 main ports to communicate with the mega server. If these two items are not open, expect this error to appear every time you try to get the latest version of the game. In this case, you can solve the problem by enabling UPnP or by manually punching the 2 ports you need.

Gw2 Game Client Lost Connection To Server

The game crashed twice yesterday (I had to use the Ctrl-ALT-Del key combination to get the computer to respond), and the connection lost once. Today: Eight connection losses in the last 19 minutes. The internet connection has been stable for the last three weeks. I’ve restarted the game a few times, restarted the computer, checked the HDD smart, and checked the firewall, but it has not changed at all. Very nice, as I am almost done with my personal story.

Using ADSL 2 and in Australia, the same thing is happening today. I didn’t have any internet problems until I started playing Guild Wars 2. When I started playing Guild Wars, my internet went down completely. I didn’t have any problems before today, but I cannot predict when I will lose my internet. I never had this problem before.

Guild Wars 2 installer is blocked: If you have downloaded a modified version of Guild Wars 2, it is possible that the executable is blocked, which is why Windows refuses to give it all the permissions. If you see this error message when trying to install the game, check if the executable is really locked (and if so, unlock it).

Corrupted game cache: Under certain circumstances, this problem can occur due to corrupted data in the Guild Wars 2 cache folder. In this case, you can use File Explorer to access this folder and delete its contents to resolve the problem.

DNS mismatch: As some affected users have confirmed, this problem can also be caused by a mismatch in your DNS (Domain Name System). In this case, you can solve the problem by deleting your current DNS or switching to Google DNS.

How to Repair “Connection Error Detected” in Guild Wars 2

Updated: February 2024

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Bypassing the modem with an Ethernet cable, especially on modem/router hybrid systems, can solve this problem. Deactivating the SPI Firewall fixes this problem as well.

My enjoyment of this game has been great, but I ran an update a few days ago, and then I was unable to connect. As soon as the launcher opens, it says, “Connection error detected” and then repeatedly tries. Despite running as admin, using -repair, checking my antivirus for blacklists, and disabling it before launching, nothing works. Please help me.

Allow access to the firewall program and exclude Guild Wars 2 in the antivirus program

You may not be able to connect to Guild Wars 2 servers because your system’s security software is denying you access to the game’s network. This problem occurs mainly because these programs consider the game suspicious. You can exclude the game in your third-party antivirus program, and add to your firewall’s list of accepted connections and see if that solves the problem.

Make sure you are connected to the internet

This error appears to be related to your network connection, so make sure you have reliable Internet access on your computer.

RECOMMENATION: Click here for help with Windows errors.

Frequently Asked Questions

  1. Make sure that you are using a supported connection (Guild Wars 2 requires at least a broadband connection to work properly).
  2. Reboot your router and modem.
  3. Reboot your computer.
  4. Temporarily bypass all routers, hubs, or switches and try connecting directly to the modem.

  1. Find the file Gw2.exe.
  2. Right-click on the file and select Create shortcut.
  3. Rename this new shortcut to Guild Wars 2 Repair.
  4. Right-click on Guild Wars 2 Repair and select Properties.
  5. Find the Target line and add -repair to the end. (Example: "C:\Games\Guild Wars 2\gw2.exe" -repair)
  6. Click the OK button.

Yes. Sometimes this means that some content becomes inaccessible to play - for example, I couldn't access LA for a few minutes during the last patch because it was still loading/installing. Now that they've finally enabled the revised streaming capabilities in the client, it's finally working.

  1. Upgrade your account in the in-game gem store.
  2. Log in to Guild Wars 2 with the account you want to upgrade.
  3. If you are playing with a free account, click the "Upgrade to a full account" button in the upper left corner of the screen.
  4. Select the version of the game you want to purchase.

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Mark Ginter is a tech blogger with a passion for all things gadgets and gizmos. A self-proclaimed "geek", Mark has been blogging about technology for over 15 years. His blog,, covers a wide range of topics including new product releases, industry news, and tips and tricks for getting the most out of your devices. If you're looking for someone who can keep you up-to-date with all the latest tech news and developments, then be sure to follow him over at Microsoft.