Scenario
you are trying to execute this powershell command
Invoke-WebRequest -Uri https://mysite.com/
and you get this error. “Invoke-WebRequest : The request was aborted: Could not create SSL/TLS secure channel.”
Solution
The cause of the error is Powershell by default uses TLS 1.0 to connect to website, but website security requires TLS 1.2. You can change this behavior by placing the following command before the request method
[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
Invoke-WebRequest -Uri https://mysite.com/