Now if the Mac OS 10.15 calendar app won’t launch in the normal mode, then you need to check for incompatible login items. You can try running your Calendar in normal mode by restarting your device without pressing down the “Shift” key. If your Calendar app gets back to running normally, then the Safe Mode troubleshooting effort paid off. Release the key once the Apple logo appears.Ģ. Go to “Apple menu > Restart”, and then press down the “Shift” key as your device restarts. The first thing to do is to try out one of the simplest troubleshooting tools for Mac, the Safe Mode.ġ. How to Fix macOS 10.15 Calendar that’s Not Starting Method 1: Troubleshooting with Safe Mode

Microsoft Excel for macOS 10.14 Crashesįrom one day to the next, a well-functioning Calendar app on Mac can become severely problematic, sometimes entering a loop where it initiates updates that fail, and then quits on its own.Ĭan’t open Calendar on your Mac OS 10.15 because of an error message stating something like “The application ‘Calendar.app’ is not open anymore”? Here are some easy troubleshooting techniques to fix a Mac OS 10.15 calendar app that’s not starting.

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Google calendar for mac laptop