Checkboxes working for one user but not for another

[RB_]

I created a form that uses checkboxes to update other fields to Y or N. The checkboxes work for me but not for another user who has the same version of Access 365 installed on his machine. For him, the checkboxes aren't checked even when the other field is Y. Also, when he checks a box the box is always checked for subsequent records as he progresses through the records but the check does not update the other field to Y, even for the record for which the box was first checked. It's very strange because we was working on an earlier version that was working fine. None of the VBA had been modified. This is a confidential database and cannot be shared.

On current the VBA sets the checkboxes to False then updates each to True when the corresponding Y/N field value is Y.

All suggestions are appreciated.

Thanks

[Micron]

The code doesn't run because the db is not in a Trusted Location on his pc?

[ranman256]

in a continuous form, if the checkbox is not bound to a field, then checking 1 will checkmark all. (every control does this)
bind the checkbox to a field.

[RB_]

Yes! This was the problem. He didn't select "make this a trusted document" after opening. Thanks for your help.

[Micron]

Glad I could help. Your comments about there being code involved and that the same db worked for you ruled out any issues regarding continuous or datasheet forms for me so I figured that was likely it.