Unable to connect to Silverlight Solutions code repo from Visual Studio 2015 Professional Edition

Viral Shah 0 Reputation points

Problem Statement: Unable to connect to Silverlight Solutions code repo from Visual Studio 2015 Professional Edition

Downloaded and installed below Version,


Getting this Error Message:

TF400324: Team Foundation services are not available from server

Technical information (for administrator):

The underlying connection was closed: An unexpected error occurred on a send.

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Solutions Tried,

·         Checked required access for the project with DevOps team and mentioned, I have all the required project access

·         Uninstalled Visual Studio 2015

·         Reinstalled Visual Studio 2015

After reinstallation, observed below error message,

Azure AD Authentication Connected Service Pac

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Unable to sign in into visual studio from VS 2015 and showing below error message- “The online service is not available. Please try again later”.

Same sign in is working fine from VS 2019 professional edition,


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Visual Studio
Visual Studio
A family of Microsoft suites of integrated development tools for building applications for Windows, the web and mobile devices.
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  1. Anna Xiu-MSFT 25,546 Reputation points Microsoft Vendor

    Hi @Viral Shah

    Welcome to Microsoft Q&A!

    Please try to configure .NET Framework to support strong cryptography to use TLS 1.2 or enable TLS 1.0 from registry.

    For configuring to support strong cryptography > press Windows key + R > type regedit > navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\.NetFramework\v4.0.30319 > add a new registry entry named SchUseStrongCrypto > set its type to DWord > set its value = 1.(or creating a new registry entry by using PS command)

    For enabling TLS 1.0 > press Windows key + R > type regedit > navigate to Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\ > TLS 1.0 > Client > Enabled DWord value 1.



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  2. Viral Shah 0 Reputation points

    Hello Anna,

    Thank you so much for your time and response. I followed all the above steps instructed and still getting the same error message.

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    I tried to login using Add an account option to connect and getting below error message. Could you please kindly review and advise ?

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    Thank You,

    Yours Sincerely.

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