QuickBooks Banking Error 9999 is a common issue that users face when trying to update or download bank transactions in QuickBooks Online. This error typically appears with the message:

“Sorry, we can’t update your account. Please try updating again later. (9999)”

It indicates a failure in communication between QuickBooks and your bank’s servers, often due to connection interruptions, browser issues, or temporary outages.

? Why Does Error 9999 Happen?

QuickBooks Error 9999 can be triggered by:

• Disrupted connection to your bank’s website

• Corrupted browser cache or cookies

• Temporary server problems at the bank’s end

• Using an outdated or unsupported web browser

• Firewall or antivirus software blocking the connection

?️ Easy Fixes for QuickBooks Error 9999

✅ 1. Manually Update Your Bank Connection

• Go to the Banking tab in QuickBooks Online

• Click the Update button in the top-right corner

• Wait a few minutes and try again

✅ 2. Clear Your Browser Cache

• Go to your browser’s settings

• Clear cookies and cached files

• Close and reopen the browser, then log back into QuickBooks

✅ 3. Disconnect and Reconnect Your Bank Account

• Select the affected bank account

• Click the pencil icon > Edit account info

• Check “Disconnect this account on save” and click Save

• Reconnect using your login credentials

✅ 4. Try a Different Browser

Switch to a different supported browser (Chrome, Firefox, Safari, or Edge) and log into QuickBooks again.

Read Also: QuickBooks Online Banking Error 590

✅ Need More Help?

If the error persists, contact QuickBooks Support for help tailored to your account or banking institution.