How to Fix QuickBooks Online Error 9999: A Comprehensive Guide

5 min readMay 31, 2024

QuickBooks Online (QBO) is a powerful tool that simplifies accounting tasks for businesses of all sizes. However, users occasionally encounter errors that disrupt their workflow. One such issue is Error 9999, which typically occurs when attempting to update banking information. This error is often described as a “script error” and can be frustrating, but it is generally resolvable with a few troubleshooting steps. In this blog, we’ll delve into what causes QuickBooks Online Error 9999 and provide a detailed guide on how to fix it.

Understanding QuickBooks Online Error 9999

Error 9999 in QuickBooks Online is a script error that occurs when there is an issue with your internet connection or when there’s a problem syncing with your bank. This error prevents users from downloading and updating bank transactions, leading to significant disruptions in financial management.

Common Causes of Error 9999

Script Errors: Problems with the website’s scripting that prevent proper communication between QuickBooks and the bank.
Browser Issues: Outdated or incompatible web browsers can cause this error.
Internet Connection: Unstable or slow internet connections can disrupt the synchronization process.
Bank’s Server Issues: Sometimes, the issue might be with the bank’s server, which can be down or under maintenance.
Corrupted Cache and Cookies: Accumulated cache and cookies can interfere with the performance of QuickBooks Online.

Troubleshooting Solutions for QuickBooks Online Error 9999

1. Update Your Web Browser

Using an outdated browser can cause various issues, including Error 9999. Ensure your browser is up-to-date to maintain compatibility with QuickBooks Online.

Steps to update your browser:

Google Chrome: Go to Settings > About Chrome. Chrome will automatically check for updates and install them.
Mozilla Firefox: Go to Menu > Help > About Firefox. Firefox will check for updates and install them.
Microsoft Edge: Go to Settings and more > Settings > About Microsoft Edge. Edge will check for updates and install them.
Safari: Updates are included with macOS updates. Go to System Preferences > Software Update.

2. Clear Browser Cache and Cookies

Clearing your browser’s cache and cookies can resolve many performance issues, including Error 9999.

Steps to clear cache and cookies:

Google Chrome: Go to Settings > Privacy and Security > Clear browsing data. Select “All time” and ensure “Cookies and other site data” and “Cached images and files” are checked, then click “Clear data.”
Mozilla Firefox: Go to Menu > Options > Privacy & Security. In the Cookies and Site Data section, click “Clear Data.”
Microsoft Edge: Go to Settings > Privacy, search, and services > Clear browsing data. Choose “All time” and select “Cookies and other site data” and “Cached images and files,” then click “Clear now.”
Safari: Go to Preferences > Privacy > Manage Website Data. Click “Remove All.”

3. Check Your Internet Connection

A stable internet connection is crucial for the proper functioning of QuickBooks Online. Use online tools like Speedtest by Ookla to ensure your connection is stable and fast enough for QuickBooks Online operations.

4. Disconnect and Reconnect Your Bank Account

Sometimes, simply disconnecting and reconnecting your bank account can resolve the synchronization issues that cause Error 9999.

Steps to disconnect and reconnect your bank account:

Go to the Banking tab in QuickBooks Online.
Select the account you want to disconnect.
Click the pencil icon to edit the account.
Select “Edit account info.”
Check the box that says “Disconnect this account on save.”
Save the changes.
After disconnecting, reconnect the account by following the prompts to add a new bank account.

5. Manually Update Bank Transactions

If the automatic update fails, manually updating your bank transactions can be a temporary workaround.

Steps to manually update transactions:

Go to the Banking tab.
Select the account experiencing issues.
Click the “Update” button to manually refresh the connection.

6. Report the Issue to QuickBooks Support

If none of the above solutions work, reporting the issue to QuickBooks Support is essential. They can provide more specific assistance and investigate further if the problem lies on their end.

Steps to report the issue:

Go to the Help menu in QuickBooks Online.
Select “Contact Us.”
Describe your issue and follow the prompts to submit your report.

7. Use an Alternative Browser

Sometimes, the issue may be specific to the browser you are using. Switching to an alternative browser can help determine if the problem persists across different platforms.

8. Check Your Bank’s Server Status

Occasionally, the issue may be with the bank’s servers rather than QuickBooks. Visit your bank’s website to check for any announcements regarding server maintenance or outages.

Conclusion

QuickBooks Online Error 9999 can be a significant inconvenience, disrupting your ability to manage your finances efficiently. However, by following the troubleshooting steps outlined in this guide, you can typically resolve the issue and get back to business as usual. Keeping your browser updated, clearing cache and cookies, ensuring a stable internet connection, and periodically checking your bank’s server status are good practices to prevent such errors in the future. If problems persist, QuickBooks Support is always there to assist you.

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