I have TD Bank and Quickbooks Desktop 2024. For me the previously working connection seemed to fail after a QB Update, but that could be a coincidence. I un-linked the account and tried to re-link but it failed with a 1013. My resolution was to Sign into my banks web page and go into "Account Options", then "Account Services". Scroll down to "Manage Linked Services" and under the heading "Financial Tools" click on "Manage Settings". I use both Quicken and Quickbooks. For Quickbooks Ignore the section titled Quicken! Instead scroll down to "Financial Tool Access". Click on the carrot ^ to expand "Finance Tool Access" and then click on the link for "Finance Tool Access". You will see "QuickBooks Windows 2023":. Mine said "Approval Pending". I clicked on it and it said "Authorized". Qickbooks was immediately allowed to re-link the account.
If you have Quicken don't get mislead by the Quicken section at the top. It has no effect on Quickbooks.
