I recently switched to the macOS Sequoia Developer Beta, but when I tried to run Xcode, I encountered an issue where it stated that my OS was not supported. I updated to the latest version of Xcode 15 and even tried the Xcode 16 beta, but the problem persisted. After trying several methods, I found this to be the easiest and most reliable temporary solution. It allows you to use Xcode with all features running smoothly and no bugs Install the latest version of Xcode from the App Store. Go to the Applications folder. Find Xcode, right-click on it, and select “Show Package Contents.” A new window will open. Navigate to the folder named “Contents.” Open the folder named “MacOS.” Inside, you’ll find an executable file named “Xcode.” Click on it to launch Xcode. Using this method, Xcode should work without any bugs or issues. Hope this helps anyone else facing the same problem!