Hi @mwarril ,
Based on the error message, I suggest you refer to this article about it:
https://answers.microsoft.com/en-us/msoffice/forum/all/suggested-fix-for-read-aloud-isnt-available/c68d7e09-3500-49d7-934d-8ec5f505d42a
If this issue is still existed, try to open in safe mode:
Press Win + R, type "excel /safe" in the blank box, press Enter. If it works fine in safe mode, please check the add-ins in your excel and disable them.
Click File > Excel Options > Add-Ins on the left side of the dialog. Then click the drop-down arrow at the bottom of the dialog box and select "COM Add-Ins" from the list, then click the GO button. What comes up is a list of COM-Add Ins that are loaded and running.
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