Hi again, AVIDPgh.
I noticed that a new thread or post has been created regarding the Error 105 you're encountering when attempting to download transactions from American Express.
Allow me to direct you to that post, where one of my colleagues has already responded with troubleshooting steps to resolve this issue.
Here's the link: https://quickbooks.intuit.com/learn-support/en-us/banking/american-express-connection/01/1414806#M11...
The Community is always here if you need anything else.
