Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Hi, Janice Abshire
This sounds like Excel is crashing during startup, here are some suggestions you can try:
Restart your Mac, then open Word and select Help > Check for Updates. Install all available Office updates and restart the Mac again.
Hold the Shift key while opening Excel. This may prevent startup items from loading.
If Excel still closes immediately, create a temporary macOS user account under System Settings > Users & Groups, sign into it, and test Excel. If it opens there, the problem is likely limited to your original Mac user profile.
If it also crashes in the new account, reinstall Excel using the same Microsoft account that owns the license. Reinstalling Excel has resolved similar launch failures.
Please also provide the exact error text, your macOS version, and your Excel version.
Thank you for your patience in reading, I hope this information has been helpful to you.
If the answer is helpful, please click "Yes" and kindly upvote it. If you have extra questions about this answer, please click "Comment."
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.