Connection error(s) detected. Retrying...

[Blink.7940]

I cannot launch GW2 client, my internet is working fine but I am getting this when I try to launch GW2

[Healix.5819]

This error occurs when GW2 can't download from the patch server. Either your DNS is outdated or something is blocking GW2. You can try accessing the server in your browser (http://assetcdn.101.arenanetworks.com/latest64/101), which should only show a line a numbers (the first number being the current build, which is currently 154410).

Clear your DNS cache by opening a command prompt (search the start menu for cmd) and entering:

ipconfig /flushdns

If needed, switch DNS providers:

https://developers.google.com/speed/public-dns/docs/using

[Blink.7940]

I tried flushing DNS and Google DNS doesnt seem to work for me on my university wifi

[Healix.5819]

I'm assuming you couldn't access the link in your browser, confirming you actually can't connect to the server, and it still didn't work after using Google DNS?

You can check what the DNS is providing by opening a command prompt and entering:

nslookup assetcdn.101.arenanetworks.com.
nslookup assetcdn.101.arenanetworks.com. 8.8.8.8
nslookup assetcdn.101.arenanetworks.com. 1.1.1.1

The first is your default DNS, the second is google, the third is cloudflare. Since you're on a public network, it's possible that they're blocking what you can access, which will either cause these to give no results, or all have the same results with their own IPs.

[Blink.7940]

No I am able to open the Link with patch numbers
 

And I am only getting results on default DNS, google and cloudflare gives DNS request timed out

[Healix.5819]

They are probably blocking other DNS providers. If you can access it in your browser, the DNS wasn't a problem, so changing it would have only made it easier to connect to different servers.

You can use the -log option to have GW2 log what it's trying to do. The log will be written to %appdata%\Guild Wars 2\Gw2.log when GW2 exits. If it's only failing to connect, ensure any security software isn't blocking GW2, as you've already confirmed you can connect. The other likely error would be an unexpected response when downloading a file, which would be caused by either security software, or worst case, the firewall of the network, which will require a VPN to bypass (or a network admin to fix it).

To manually try a different server...

Spoiler

Search the start menu for cmd, right click it and run as administrator. The title of the command prompt should begin with Administrator. Enter the following command:

notepad %windir%\system32\drivers\etc\hosts

This will open the hosts file in notepad. Add the following line to the file and save it:

65.8.62.176 assetcdn.101.arenanetworks.com

Note the IP will eventually change - it could take days or months - which will cause this connection problem.

If notepad says the file couldn't be opened, back in the command prompt, enter the following line, which will create the file with the line already added:

echo.65.8.62.176 assetcdn.101.arenanetworks.com>%windir%\system32\drivers\etc\hosts

 

[Blink.7940]

Thank you so much this worked for me