Package manager in Visual Studio 2015 “407 (Proxy Authentication Required)”

Question

I understand this is an often asked question, however after days of research I\'ve not found an answer to this particular problem.

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I have a new ASP.NE

Answer 1

You need to modify file 2 .config files:

for Visual Studio 2015

• C:\Program Files (x86)\Microsoft Visual Studio 14.0\Common7\IDE\vsn.exe.config
• C:\Program Files (x86)\Microsoft Visual Studio 14.0\Common7\IDE\devenv.exe.config

for Visual Studio 2017

• C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\Common7\IDE\vsn.exe.config
• C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\Common7\IDE\devenv.exe.config

The bypass for nuget.org will work if, without the proxy, you still can get it's IP from DNS server and nothing else is blocking it.

Also need this to install nuget

Open the file C:\Users\[YOUR_USER_NAME]\AppData\Roaming\NuGet\NuGet.Config and add inside the <\configuration> tag the following:

Taken from Marco Mengoli's Blog