The creation and customization of database applications using Microsoft Access
Hi,
If it is an ACCDE file, then you are like many others affected by buggy security updates that have been discussed for 2 weeks in all Access forums around the world (including here already). This bug has been fixed by Microsoft in the meantime for some variants, for others not yet.
You can find the corresponding list here. Strangely, the article does not list this most common error message, but it is caused and fixed by the same updates.
Servus
Karl