No Connection with SSL/TLS secure channel

Question

I am using Microsoft Visual Studio Professional 2022 (64-bit) Version 17.8.6. When I tried to get a nuget package or use Manage Extension I get an error message that "The underlying connection was closed: Could not establish trust relationship for the SSL/TLS secure channel." If I click on the link in the below error message I am able to see data in the webpage.

[nuget] Failed to retrieve metadata from source 'https://azuresearch-ussc.nuget.org/query?q=&skip=0&take=26&prerelease=false&supportedFramework=net8.0-android34.0&supportedFramework=net8.0-ios17.2&supportedFramework=net8.0-maccatalyst17.2&supportedFramework=net8.0-windows10.0.19041&semVerLevel=2.0.0'.

An error occurred while sending the request.

The underlying connection was closed: Could not establish trust relationship for the SSL/TLS secure channel.

The remote certificate is invalid according to the validation procedure.

Answer 1

Hello @McDonald, Ronald,

Welcome to Microsoft Q&A forum.

Please try to enable the TLS1.2(run following commands in CMD) and then try to get a NuGet package again.

reg add "HKLM\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\TLS 1.2\Client" /v DisabledByDefault /t REG_DWORD /d 0 /f /reg:32
reg add "HKLM\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\TLS 1.2\Client" /v DisabledByDefault /t REG_DWORD /d 0 /f /reg:64
reg add "HKLM\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\TLS 1.2\Client" /v Enabled /t REG_DWORD /d 1 /f /reg:32
reg add "HKLM\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\TLS 1.2\Client" /v Enabled /t REG_DWORD /d 1 /f /reg:64

If this doesn’t work, please try following:

1. Press Win + R, type regedit, navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\.NetFramework\v4.0.30319, add a new registry entry called SchUseStrongCrypto, set its type to DWord, set its value to 1.
2. Follow this document: Clearing local folders to clean NuGet cache.
3. Try to repair/update Visual Studio from VS Installer.
4. If possible, try to open Developer Command Prompt for Visual Studio 2022, run devenv /ResetSettings to reset VS settings.

Feel free to let us know if above methods work.

Best Regards,

Tianyu

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