Extend your Active Directory Schema to include Exchange attributes for Office 365

You will need to download the Exchange setup from VLSC and extract them to a local folder.

Then, open an elevated PowerShell and run

.\setup.exe /PrepareSchema /IAcceptExchangeServerLicenseTerms

Assuming to do accept the terms…

2020 10 16 08 05 53 Greenshot
2020 10 16 08 09 22 Greenshot

Once this is done, you will be able to use the newly created attributes.

2020 10 16 08 15 27 Window

AADConnect however will not recognize them as yet, To rectify this rerun the AADConnect setup tool, located at “C:\Program Files\Microsoft Azure Active Directory Connect” (you should also have a shortcut on the desktop):

aadConnectschema2

As shown on the screenshot select “Refresh connector schema” option, then press the Next button.

You will be prompted to enter credentials for the Azure AD connector, and to select the directories for which connectors you would like to perform the schema refresh.

2020 10 16 08 12 52 Greenshot
2020 10 16 08 13 32 Window

You will now be able to manage any of the Exchange related attributes and the changes you made will be reflected in Exchange Online.

If you found this article helpful, would you consider buying me a Coffee?