Revit 2020.2.9 Hotfix ((better)) <GENUINE>
If you have never installed any updates on your Revit 2020, you cannot install version 2.9 directly. You must first install (the base update) and then apply the 2.9 hotfix. However, most modern deployment methods (like the Autodesk Access app or web installers) automatically bundle prior fixes.
While specific release notes for the ".9" increment often focus on maintenance, the broader 2020.2 update line it concludes introduced critical fixes for: BIM 360 Connectivity: Earlier versions faced issues where linked cloud models might fail to load if user permissions were forcibly relinquished. Stability and Security: revit 2020.2.9 hotfix