what is 155 error code? how do I resolve this?

Good evening, @uperform. 

Welcome to the Community! 

Bank error 155 means that your financial institution isn't allowing QuickBooks to connect and retrieve your data. We're working with your financial institution to resolve this issue. 

We recommend contacting your bank and request that they allow the connection. If the issue remains unresolved, ask your bank representative to escalate the problem through our OFX Connectivity page. 

Feel free to reach back out and let us know how it goes. We want to make sure that you get a connection with your bank and QBO as soon as possible. Have a great day! 

@uperform 

Try opening your QBO account on any private/incognito browser.