Installation Issue - Stuck at Connecting\Download Failed

#1 - Sept. 4, 2012, 1:34 p.m.
Blizzard Post

If your installation is stuck at 0% or you are receiving a download failed message, we have found this to usually be attributed to your firewall or security applications, which may be blocking your ability to connect to the ArenaNet servers. We recommend disabling your firewall first and seeing if this fixes the issue. To quickly eliminate whether or not background applications might be interfering with the client, you may want to try disabling background processes which is outlined in the KB article below:

https://help.guildwars2.com/entries/27698133-Connectivity

You may also want to check to make sure that you are running the installation as the administrator.

Beyond this, please submit a support ticket to our Technical Support Team so that we may gather some more information from you in order to locate the cause of this issue.

#2 - May 28, 2014, 2:34 p.m.
Blizzard Post

An issue developed in May (2014) with FIOS and Verizon. Here’s a bit of information from our Server Team that may be helpful to those impacted by the problem:

We’ve investigated this and it appears to be a real issue with DNS lookup for some Verizon customers. While editing your host file will work in the short term, it is very risky, as any of those addresses you just hardwired into your OS could change at any time. Even worse, if you’re like me, you’ll forget about editing the hosts file and be really confused in the future when patching stops working.

A better workaround would be to set your DNS provider to Google (https://developers.google.com/speed/public-dns/docs/using) as that fixes this problem and will continue working into the future.

You might find additional helpful info in this forum thread from May 21, 2014 or this older thread from May 2, 2014.