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I'm attempting to install xunit version 2.1.0.. However I'm getting the following exception:
Install-Package : Exception 'System.AggregateException' thrown when trying to add source 'https://api.nuget.org/v3/index.json'. Please verify all your o nline package sources are available. At line:1 char:16 + Install-Package <<<< xunit -Version 2.1.0 + CategoryInfo : NotSpecified: (:) [Install-Package], Exception + FullyQualifiedErrorId : NuGetCmdletUnhandledException,NuGet.PackageManagement.PowerShellCmdlets.InstallPackageCommand
Any ideas on whats going wrong? Sadly google is not giving me anything helpful..
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Switch to the Browse tab, search for the package name, select it, then select Install). For all packages, delete the package folder, then run nuget install . For a single package, delete the package folder and use nuget install <id> to reinstall the same one.
Enable package restore by choosing Tools > Options > NuGet Package Manager. Under Package Restore options, select Allow NuGet to download missing packages. In Solution Explorer, right click the solution and select Restore NuGet Packages.
Solution for unable to install NuGet provider for PowerShellRun both cmdlets to set . NET Framework strong cryptography registry keys. After that, restart PowerShell and check if the security protocol TLS 1.2 is added. As of last, install the PowerShellGet module.
Open NuGet Package Manager, go to the package, and uninstall (it should show the new version that you modified the packages. config file to). In NuGet Package Manager, go to the browse tab, find the package you just uninstalled, then install it again.
It is an old question, but it just happened to me, and the solution may help others: In my case it was due to a package source that was not available anymore and I needed to remove it from the NuGet Package manager configuration:
Tools -> NuGet Package Manager -> Package Manager Settings -> go to Package Sources and remove the source that is generating the problem.
And be aware of the fact that this server is not responding! If it is one server of your own, it would be good for you to check what is happening with it. ;)
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