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I have installed a NuGet Package Manager 2.8.60318.667 on VS2010 Extension Manager. However, The Manage Nuget Packages cannot be accessed with prompt of "The underlying connection was closed: An unexpected error occurred on a send" I have tried the solution in :NuGet fails: "The underlying connection was closed: An unexpected error occurred on a send" But Failed. Any suggestions on this?

Hun Su
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  • run `[Net.ServicePointManager]::SecurityProtocol=[Net.ServicePointManager]::SecurityProtocol-bOR [Net.SecurityProtocolType]::Tls12` under `Tools`-->`Nuget Package Manager`--> `Package Manager Console` and then install the package to test again. – Mr Qian Sep 23 '20 at 02:50
  • Thanks for the suggestions. I have tried that while the error changed to "The underlying connection was closed: Could not establish trust relationship for the SSL/TLS secure channel." – Hun Su Sep 25 '20 at 01:45

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