Description
This issue is caused by a mismatch in TLS certification. Windows Powershell ships with version 1 of TLS, while Github requires version 1.2.
Steps to reproduce
When building PowerShell, run the Start-PSBootstrap script
PS C:> Start-PSBootstrap
Installing PowerShell build dependencies
dotnet is already installed. Skipping installation.
pwsh.exe not found. Install latest PowerShell Core release and add it to Path
VERBOSE: Destination: C:\Users\joelj\AppData\Local\Microsoft\powershell
VERBOSE: About to download package from
'https://github.com/PowerShell/PowerShell/releases/download/v6.0.1/PowerShell-6.0.1-win-x64.zip'
Invoke-WebRequest : The request was aborted: Could not create SSL/TLS secure channel.
At D:\HackIllinois2018\Powershell\PowerShell\tools\install-powershell.ps1:139 char:9
+ Invoke-WebRequest -Uri $downloadURL -OutFile $packagePath
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidOperation: (System.Net.HttpWebRequest:HttpWebRequest) [Invoke-WebRequest], WebExc
eption
+ FullyQualifiedErrorId : WebCmdletWebResponseException,Microsoft.PowerShell.Commands.InvokeWebRequestCommand
Expected behavior
Script is able to establish a secure channel that matches default Windows certificates
Actual behavior
Error is returned: The request was aborted: could not create SSL/TLS secure channel.
Environment data
> $PSVersionTable
Name Value
---- -----
PSVersion 5.1.16299.248
PSEdition Desktop
PSCompatibleVersions {1.0, 2.0, 3.0, 4.0...}
BuildVersion 10.0.16299.248
CLRVersion 4.0.30319.42000
WSManStackVersion 3.0
PSRemotingProtocolVersion 2.3
SerializationVersion 1.1.0.1 
Description
This issue is caused by a mismatch in TLS certification. Windows Powershell ships with version 1 of TLS, while Github requires version 1.2.
Steps to reproduce
When building PowerShell, run the Start-PSBootstrap script
Expected behavior
Script is able to establish a secure channel that matches default Windows certificates
Actual behavior
Error is returned: The request was aborted: could not create SSL/TLS secure channel.
Environment data