Cannot authenticate to nuget feed in Visual Studio Team Services (was VSO) with Visual Studio 2013 -

we have nuget feed set on our team services account. vs 2015, can authenticate no problem, using microsoft login form.

with visual studio 2013, pops generic authentication form, keeps popping no matter input it. has else come across this? way around it?

normally, use 2015 authenticate 2013 fine. unfortunately, can't 2015 run on pc anymore - need make work 2013.

authenticate vsts feed via "nuget package manager" requires vs2015 update1 , later information mentioned in page provided jack.

if don't mind store credential in "nuget.config" file, use personal access token method support nuget client , easy use. , nuget auth helper method this.