I get this error on opening and closing Excel 2010 for Home and Students 64 bit on Windows 10 64 bit. The error also sometimes refers to tool MGlobal_Open. I have searched for a fix but nothing I have found is relevant to my version and platform. I have tried Repair and also uninstalled and reinstalled Office to no avail. Can someone help me fix this please?

I'm getting exactly the same error with Windows 11 and Office 365 64-bit (latest version) Excel (except no reference — yet — to MGlobal_Open). Like the OP, I have tried Repair and Reinstall, without success. If I dismiss the error message (needs two clicks) and open a file, I can edit as normal and save. When I then close Excel the error message shews again and goes and the program closes on two clicks. Can anyone suggest what's going on and how to stop it, please?

What add-ins and startup workbooks (eg personal macro workbook) do you have loaded?