Addressed vulnerabilities related to importing SketchUp files and updated components for .adsk file imports to improve overall security .
is a cumulative hotfix . If you have Revit 2020.2 installed (or any earlier .2.x patch), applying 2020.2.9 will bring you fully up to date. It supersedes previous hotfixes (2020.2.1 through 2020.2.8).
A hotfix is a software patch that is released to fix a specific issue or set of issues in a software product. Hotfixes are typically small, targeted updates that are designed to resolve critical problems and improve the stability and reliability of the software.
While Autodesx focuses heavily on Revit Cloud Worksharing for newer versions, Revit 2020 users often still use Revit Server or LAN-based worksharing. The 2.9 hotfix resolves a rare but devastating :