What do you mean by (auto_open/workbook_open??)

Workbook_Open is an Application 'event'.
May not always work, especially if the file is corrupt, because the
Application controls its functionality! The Application usually
disables events in corrupt files as well as for any other reason it
deems fit to do so during runtime.

Auto_Open is an AutoRunMacro 'procedure'.
This will pretty much always work even though it's also controlled by
the Application because procedures are managed differently than how
events are managed!

--
Garry

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