It's great to be able to run Graph API requests in PowerShell scripts if everything goes right. This article describes why some common Graph API errors occur in scripts and what to do when the errors happen. Most errors are due to permissions assigned to the Azure AD apps used to run scripts and getting the basics will resolve those problems.
The Microsoft Graph operates on a least permission model, which means that developers are forced to ask for permissions for the actions they wish to perform. This is a very different approach to the way traditional PowerShell modules work, so it's an area to focus on when converting scripts which use cmdlets from the Azure AD and MSOL modules to the Microsoft Graph PowerShell SDK. In this article, we look at four ways to find out what permissions are needed to perform different actions and explain how the Graph use the permissions.