Unable to Sign In to Visual Studio 2015

Question

I'm having trouble with "sign in" function in VS 2015. After entering my username\password data i'm getting

A network connection attempt has timed out. This could be a problem either with our service or your local network connection.

But I can connect to live.com and msdn.com easily. What's the problem could be?

Answer 1

The resolution for me was to changed my Visual Studio proxy settings:

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

from:

<system.net> <settings> <ipv6 enabled="true"/> </settings> </system.net>

to:

<system.net> <defaultProxy useDefaultCredentials="true" enabled="true"> <proxy usesystemdefault="True" /> </defaultProxy> <settings> <ipv6 enabled="true"/> </settings> </system.net>

Answer 2

My resolution was exactly the opposite to that which worked for @devries48:

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

Locate system.net node and change this from:

<system.net>
    <defaultProxy useDefaultCredentials="true" enabled="true">
        <proxy usesystemdefault="True" />
    </defaultProxy>
    <settings>
        <ipv6 enabled="true"/>
    </settings>
</system.net>

to:

<system.net>
    <settings>
        <ipv6 enabled="true"/>
    </settings>
</system.net>

It will depend on your (corporate) proxy settings for which approach will work best for you. If you have other instances of Visual Studio you can compare the settings in the configuration for these instances too:

• VS 2017 - C:\Program Files (x86)\Microsoft Visual Studio\2017\Professional\Common7\IDE
• VS 2013 - C:\Program Files (x86)\Microsoft Visual Studio 12.0\Common7\IDE
• VS 2010 - C:\Program Files (x86)\Microsoft Visual Studio 10.0\Common7\IDE