Microsoft released a new version of PowershellGet (2.2.4) in April 2020 that supports TLS 1.2. The issue is that Powershell 5.1 doesn’t support this configuration out of the box and the PowershellGet module (1.0.0.1) didn’t support TLS 1.2 at all. In April 2020, Microsoft disabled support for TLS 1.0 on the Powershell Gallery and now requires TLS 1.2. That leaves TLS 1.2 as the de facto standard, with TLS 1.3 adoption rising but not as widespread yet. This was largely adopted across the internet by 2020. Starting in 2018, there was a groundswell of (good) advice that TLS 1.0 and 1.1 should be deprecated on websites and in browsers. Transport Layer Security (TLS) is the successor to SSL. By default, Powershell uses TLS 1.0 and that’s been widely deprecated. The root cause is that Powershell is trying to connect to a site and there’s no agreement on the encryption protocol to use. InstallPackageĪ similar issue arises with using the Invoke-WebRequest cmdlet. : String ), Exception + FullyQualifiedErrorId : PackageFailedInstallOrDownload, Microsoft. At C: \ Program Files \ WindowsPowerShell \ Modules \ PowerShellGet \ 1. PackageManagement\Install-Package : Package ‘PSWindowsUpdate' failed to download. Once we restored TLS 1.WARNING : Source Location ‘ https : // com / api / v2 / package / PSWindowsUpdate / 2. In my case this as the case with the Kemp load balancer we were using – TLS 1.0 was disabled under SSL Properties. This error occurs when TLS 1.0 is disabled either on the end server or on a load balancer in front of the server. “The Microsoft Connectivity Analyzer wasn’t able to obtain the remote SSL certificate” This could have occurred as a result of a network error or because of a problem with the certificate installation.”
“The certificate couldn’t be validated because SSL negotiation wasn’t successful. Here I am going to document an error that indicated that the Exchange Server (in this case) was not working, but we could see that the phone was connecting fine to the server.
An excellent resource for Microsoft Exchange Server and Exchange Online administrators and consultants is the Remote Test Connectivity website at or.
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