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Since updating Windows 10 with the most recent update, can't download from AMEX. Get OL304 error.
Hi there, answers.
Thank you for posting here in the QuickBooks Community.
The error 304 that you're getting may be caused by one of the following:
I'd suggest performing the steps below in the order listed, retrying your download after each step before you move to the next.
First, let's enable TLS 1.2 in the latest version of Internet Explorer:
If you still receive the same error, you can proceed to the next steps.
To help you determine if the issue originates with your bank or their servers, create a new test company file.
If the error 304 still continue, this typically indicates that there is a problem at your bank. If you do NOT receive any error message, this means that the problem is not with your bank.
Please check this article for the next steps that you'll need to follow to fix the issue: Fix OL and OLSU Bank Feeds errors in QuickBooks Desktop.