: Historically, some 2020 hotfixes caused the Dynamo tab to disappear. If this happens, you may need to manually replace specific .sig files in your Revit Addins folder. Final Verdict: Is it Necessary?
Reports regarding the Revit 2020.2.9 Hotfix (released around July 2022) primarily centered on a critical breaking issue for cloud-based workflows. Autodesk Community, Autodesk Forums, Autodesk Forum Key Issues Reported BIM 360 Connectivity Loss revit 2020.2.9 hotfix