Hello @jbing,
Thank you for reaching out to the Quicken Community, though I do apologize that you are experiencing this issue.
Before I can further assist you, I require some more information. What is your connection method with Vanguard? You can see the connection method by navigating to Tools > Account List. If you don’t mind, could you please provide a screenshot of the error message you described receiving? If needed, please refer to this Community FAQ for instructions on how to attach a screenshot. Alternatively, you can also drag and drop screenshots to your response if you are not given the option to add attachments.
I look forward to your response.
Thank you for providing more information.
This issue usually occurs when account information is out of sync with the bank server. The information can become out of sync for a number of reasons. You may follow this link to access a FAQ that provides some troubleshooting steps to take when presented with an OL-362 error message. Please keep in mind that it is recommended to save a backup before proceeding with troubleshooting steps (just in case).
I hope this helps!