These type of issues drive me insane. I've see this my entire career (35+ years in Computer science, engineering and security). The typical reasons users are not getting accurate guidance or worse, canned support team replies, are because there are base code issues (deliberate or erroneous), or most often then not, implementing fix is too costly and would interfere with the companies strategic plan for the product. In the case of QuickBooks Premier, it is very clear that the desktop version is not a priority for Intuit.Their business model is all cloud based. QuickBooks Premier is overshadowed by its QuickBooks Online offerings.

This issue affects me personally, so I'm going to de-compile the code and run debug traces to see exactly where and why the browser validation is taking place and what API's are being called. As far as quickbooks requiring Internet connectivity is concerned, that is smoke and mirrors and I've already been able to bypass that.

I'll post the work around once I've tested it.

Cheers

Chris