I have been a Quicken user for many years. I have connected to US Bank, Fidelity, and Merrill Lynch. But, I can't add a Morgan Stanley account. I have gone into Morgan Stanley online, and enabled third party data sharing, but that hasn't worked. I continue to get the feared: OFX Error: 16503
I've called the Quicken help at 650-250-1900 but that AI solution was zero value-added. I will call Morgan Stanley but not anticipating much help from them. I need to find a MAC Quicken User that has successfully been accessing their Morgan Stanley cash management account.