Error message - Install -Package : Exception 'System.AggeratteException' thrown when trying to add source 'https://api.nuget.org/v3/index.json' Please verify all your online package are available. One or more errors occurred. Unable to load the service index for source 'https://api.nuget.org/v3/index.json. An error occurred while sending the request. The underlying connection was closed. an unexpected error occurred on a send. Unable to read data from transport connection: an existing connection was forcibly closed by remote host.
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Hi Amit, is your issue solved? – Tianyu Oct 29 '21 at 09:47
1 Answers
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Please download the related .nupkg
file to your local machine and add/set the corresponding package source in VS > Tools > Options > NuGet Package Manager > Package Sources, then install it offline by using package manager console.

Tianyu
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