I am having problems installing packages in Visual Studio 2010. When I run the Package Manager Console it displays the following error:
PM> Install-Package wpf.themes
Install-Package : The underlying connection was closed: Could not establish trust relationship for the SSL/TLS secure channel.
At line:1 char:16
+ Install-Package <<<< wpf.themes
+ CategoryInfo : NotSpecified: (:) [Install-Package], WebException
+ FullyQualifiedErrorId : NuGetCmdletUnhandledException,NuGet.PowerShell.Commands.InstallPackageCommand
How do I resolve it?
Read this article this may help you.
Thus might help Good Luck!
Try following these steps:
Download the Equifax Secure Certificate Authority certificate (http://www.geotrust.com/resources/root-certificates/) and install it into your System.
Add imap.gmail.com to the list of SSL-only servers.
Disable SSL in your mail client.