Possible solutions to "fix origin-a.akamaihd.net refused to connect"

So this is a problem that I met for several months, and it made me basically give up on playing using EA app. However, I found the way to solve the problem. Here are the basic approaches I tried to fix the problem:
1. Tried to use WARP VPN to reroute, does not work.
2. I tried several ways, get ea app installer from my friends and try to install but it still refuse or have error code.
3. Tried to disable firewall completely for a while.

Now here's how I found the TRUE problem. 
First, try to run this in your cmd on Windows:

nslookup origin-a.akamaihd.net

Then, try to using curl to directly download the installer in cmd:

curl -v "https://origin-a.akamaihd.net/EA-Desktop-Client-Download/installer/EADesktopInstaller.exe" -o EAInstaller.exe

If nslookup's command's output shows different results as curl's one, then try to open the host file following the path using Notepad or any text editor with ADMINISTRATER PERMISSION (This is very important):

C:\Windows\System32\drivers\etc\hosts

Take a look at if the IP address that is bound to origin-a.akamaihd.net showed in the curl's output is present in this file. If it is, try to commented it out using "#", then save and quite the file. 

Try to curl the ea installer again and finish the installation. I found that the root cause is this hosts file. If you do not adjust it, even if you got the offline ea app installer, you won't be able to finish installation. It will constantly reroute to the wrong IPv4 loopback address. Hope this could fix your problem :smiley: