application loader stuck at the stage of "Authenticating with the iTunes Store"

Solution 1:

I had this problem when behind a firewall.

I got around it by editing:

/Applications/Xcode.app/Contents/Applications/Application\ Loader.app/Contents/MacOS/itms/java/lib/net.properties 

If you do not find net.properties in above mentioned path then try, as it is changed now.

/Applications/Xcode.app/Contents/Applications/Application\ Loader.app/Contents/itms/java/lib/net.properties 

Change the line:

# https.proxyPort=443

To:

https.proxyPort=80

This enables the application to use the HTTP port for HTTPS. Worked straight away after this. Hope this helps.

Solution 2:

To be honest, this may not be an answer but it really worked for me.

1. I launched Application Loader and started submitting. While sumbitting was going on,
2. I launched Organiser and select Distribution over archiver in Xcode as well and started uploading concurrent.

They worked together and 2nd one completed the submission.

Just my experience.

Solution 3:

I tried many solutions like using port 80 for https connection but none of the solution worked for me.

https.proxyPort=443

to https.proxyPort=80

Whenever I face this issue, I upload application from two different instances of application loader and it works like a charm.

I have two different versions of application loader on my machine, one came with XCode4 and one came with XCode5. It always works if I upload application from two instances simultaneously.