I'm not sure what causes this issue. But I have this proble
constantly.

Like you I have to remove and resign the project when I get the error.
It usually happens after I've done some work.

I have noticed that if the workbook is opened ReadOnly and you work o
the VBA code and then change the file access back to ReadWrite i
doesn't like the certificate either.

Please let me know if you get a reason why this happens. I've bee
living with this issue for 4 years now.


Barr

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