1) Firstly download and install the latest stable version of PowerShell to your device. You can download the latest version from:
https://github.com/powershell/powershell#get-powershell
To check the version of PowerShell you currently have installed, launch PowerShell, run the command below:
Get-Host | Select-Object Version
2) Now that you have the latest version of PowerShell installed, you will need to install the AZ module if not already installed. The command below will allow you to check if you already have the AZ Module installed including the version number.
Get-Module -Name Az -ListAvailable
3) If you already have the AZ module installed, the version will appear. If no version is installed, no results will appear after running the above command. You may find that you have more the one version installed.
To install the latest version, type the command below:
Install-Module -Name Az -AllowClobber
Please note, if you already have older versions of the Az Module installed, you may wish to add -force to the end of the command so that the module installs side by side with your existing versions. Such as:
Install-Module -Name Az -AllowClobber -force
Installing the module will take about a minute. Run the command below again to confirm the module has installed
Get-Module -Name Az -ListAvailable
If you have multiple versions of the AZ Module installed, the latest version will be used by default, unless you specify for an older version to be used.