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Updated 12/19/2022
Data Types are currently not working as expected for all users of Microsoft Excel. The work-around I recommend is to revert to version 16.64.
If you are affected and haven't already done so, please take a moment to notify Microsoft that you are affected by this problem. The way to do it is to use the Menu Bar and choose Help > Feedback > I Don't Like Something. Microsoft uses the Squeaky Wheel method to prioritize bug fixes. The more reports, the higher up the priority list the bug gets. Please do this from the current update of Excel before reverting to 16.64.
To revert to version 16.64:
Use the Menu Bar and choose Help > Check for Updates to launch AutoUpdate
In AutoUpdate, set updates to Manual to prevent AutoUpdate from automatically updating after you revert to the older build.
In Finder, navigate to the Applications folder
Right-click on Microsoft Excel.app and choose Move to Trash
Restart your Mac
Empty the Mac OS Trash
Use this installer to install build 16.64 of Microsoft Excel: Excel
Some users may be able to find a work-around, which is why I am posting this discussion. Some users will be blocked from this due to licensing or IT department restrictions.
There are third-party solutions available. I don't know which ones are great and which ones are less good. I'm hoping people will try them out and reply here with their results and recommendations.
On the Insert tab of the Ribbon choose Add-ins > Get Add-ins.
In the resulting dialog enter the word Stock in the Search field then click the spyglass icon. There are a lot of add-ins available. Let's chat about them in this thread.
Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.
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I did send feedback complaining about the problem. BUT! The app won't let you do that if you are not at the most recent update. I am at 16.64 and it wouldn't let me. BUT! I also have the app on a Dell tower running Windows 10 with latest Office updates and was able to send feedback from there.
Strangely suddenly start to work normal again.
Excel for Mac 16.68
Does it stay working after you quit Excel and restart Excel?
I have 16.64 on Mac with Monterey 12.6 and 2211 on Dell tower with Windows 10. Both are running fine. No errors reopening spreadsheets. (At the moment, anyway.)
A similar thing happened to me, with quitting and restarting Excel causing the problem to return once fixed. By the way, Excel 16.68 works perfectly on a different Mac, with both running Ventura 13.1. Seems like a config file gets corrupted on exiting the program, I just don't know how to fix that. But it does not seem to be a problem with the version of Excel, unless certain versions cause the issue on certain Macs only.