How to Install Uninstall or Update Cmdlets for SharePoint Online

By default, you are not allowed to run scripts on a Windows computer, so before you can run any scripts you must allow that.

Set-ExecutionPolicy -ExecutionPolicy  Unrestricted

SharePoint Online Management Shell

Install

 Install-Module -Name Microsoft.Online.SharePoint.PowerShell

Uninstall

Uninstall-Module -Name Microsoft.Online.SharePoint.PowerShell

Update

Update-Module -Name Microsoft.Online.SharePoint.PowerShell

PnP PowerShell

Install

Install-Module SharePointPnPPowerShellOnline

Uninstall

Uninstall-Module -Name SharePointPnPPowerShellOnline

Update-Module SharePointPnPPowerShellOnline