Revit architecture not available for 32-bit system
@Anonymous
Welcome to the Autodesk User's Community..
First there's no 33B operating system 
Support for 32B OS was dropped a few years ago. Time to upgrade your OS and/or hardware.
Mark Lancaster
& Autodesk Services MarketPlace Provider
Autodesk Inventor Certified Professional & not an Autodesk Employee
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@Anonymous
@Mark.Lancaster is correct, 32bit versions of Revit has ended a while ago. The last 32bit version was Revit LT 2016, which you can get from the AVA site. That being said, you can only use Revit LT if you have an LT subscription. Once you purchase a subscription, you can then get a serial number for 2016 and download & install to begin working. Or, upgrade your OS to 64bit.
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Darin Green
Director of Customer Support
Synergis Engineering Design Solutions
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