What content files did you include in the installation? Did you ask to have a desktop shortcut created for each content item?
How are you starting the program? If you are using a desktop shortcut, is it the AutoCAD Architecture 2021 - English as AutoCAD shortcut? That will start AutoCAD Architecture with the AutoCAD interface and will not load any of the AEC modules.
David Koch
AutoCAD Architecture and Revit User
Blog | LinkedIn
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