@ChristineJoieR RE: "The following database usage scenarios are known to invalidate the digital signature"
Most of what you list are not "database usage scenarios".
In any case, the user didn't do any of those things. As they noted, all they did was launch the reports.
The reason the user is getting the message is obvious from the screenshot they included: The certificate used to sign the excel template is now expired.
If Intuit had just used a timestamping service from their certificate provider as they signed the template then this would not happen after the certificate expired, which is rather common knowledge for people that sign code. They should have known to do this.
In any case, the best way to get the message to go away is for Intuit to re-sign the templates with new certificates and make them part of a patch, not to ask each of their hundreds of thousands of payroll customers that use these reports to modify their Excel security settings - for a feature originally designed so the customers doesn't need to do that.
