If your devices are joined using Azure AD, you have at some point tried to add that Azure AD user to a local group, or temporarily as a local administrator.
We recently tried this and discovered that the Office 365 Azure AD user is in fact not listed as a local user able to be added in computer management.
So this begs the question, how do you add an Office 365 Azure AD user as a Local Administrator? Well, luckily, we are just a simple command away.
1. Open up Command Prompt by right-clicking it and selecting “Run as Administrator”
2. Enter the following command:
Net localgroup Administrators /add “AzureAD\<users Office 365 Email Adddress>”
The command should complete successfully. It is important to note that you must use the user’s email address.
If you need to find out who the administrators are on the computer then run the command
Net localgroup Administrators