Fix Nuget package errors with Visual Studio 2017 Enterprise

If you face problems accessing/installing the nuget packages from Visual Studio 2017 Enterprise edition, please follow the below steps:

1. Copy the .nuget folder into the solution folder. It should have 3 files: Nuget.Config, Nuget.exe and Nuget.Targets
2. Edit Nuget.Config as below:

<?xml version="1.0" encoding="utf-8"?>

<configuration>

  <solution>

    <add key="disableSourceControlIntegration" value="true" />

  </solution> 

  <packageSources> 

       <add key="http_proxy" value="company proxy address" />

       <add key="nuget.org" value="https://api.nuget.org/v3/index.json" protocolVersion="3" /> 

       <add key="nuget.org" value="https://www.nuget.org/api/v2/" /> 

       <add key="Local" value="local folder\Nuget Packages\" /> 

  </packageSources>

  <packageRestore>

    <add key="enabled" value="True" />

    <add key="automatic" value="True" />

  </packageRestore>

</configuration>

1. Close and Exit Visual Studio.

Other way to add proxy entry is to run the following command:

nuget.exe config -set http_proxy=http://my.proxy.address:port

In case you are wondering how to get proxy:

1. Open chrome, go to below URL to see the proxy details: chrome://net-internals/#proxy
2. Check Proxy tab on left. Run the PAC script in browser URL
3. It should download one pac file . Open in notepad. Check for something like this:

if ( host == "abc.com" )
      { return "PROXY IP Address:Port"; }

Thats your proxy.

If this doesn't work, try below:

<system.net>

    <defaultProxy useDefaultCredentials="true" enabled="true">

        <proxy proxyaddress="http://your.proxyserver.ip:port"/>

    </defaultProxy>

    <settings>

        <ipv6 enabled="true"/>

        <servicePointManager expect100Continue="false" />

    </settings>

</system.net>