Tried connecting Exchange Online PowerShell form Mac ? Getting Error
PS /Users/userone> $Session = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri https://outlook.office365.com/powershell-liveid/ -Credential $UserCredential -Authentication Basic -AllowRedirection
New-PSSession: This parameter set requires WSMan, and no supported WSMan client library was found. WSMan is either not installed or unavailable for this system.
Quick answer ! Reason behind this problem is openssl version on MacOS . pwsh need openssl v 1.0. We need to reinstall openssl using home brew.
brew install https://raw.githubusercontent.com/Homebrew/homebrew-core/64555220bfbf4a25598523c2e4d3a232560eaad7/Formula/openssl.rb -f
Home Brew in MacOS BigSur is broken and unable to install the Openssl 1.0.2 install and to solve this Mac Ports can be used to install Openssl 1.0
sudo port selfupdate
sudo port upgrade outdated
sudo port install openssl10
some cases may need to update the symbolic links
sudo mkdir -p /usr/local/opt/openssl
sudo ln -s /opt/local/lib /usr/local/opt/openssl/lib
That’s it . now open the Exchange Online PowerShell using
$UserCredential = Get-Credential
$Session = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri https://outlook.office365.com/powershell-liveid/ -Credential $UserCredential -Authentication Basic -AllowRedirection
Import-PSSession $Session -DisableNameChecking
To Disconnect Enter
#Close Session
Remove-PSSession $Session