The operating system requirements for Mac computers for 2023 are:
macOS Monterey 12 or later (macOS Big Sur 11 not supported)
- Specific macOS: macOS Monterey 12, macOS Ventura 13, macOS Sonoma 14
Please see this webpage for more information.
See also this help article for minimum system requirements.
This help article addresses the situation where TurboTax for Mac won't open after it was installed.
If you have tried exiting the program and reentering, and rebooting the computer, I recommend that you contact TurboTax Support for assistance. They may be able to set up a Glance screenshare session if needed.
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