Help has arrived, @pshaw.

Let's perform some basic browser troubleshooting steps to isolate the error. This error occurs when there are too much data in your default browser. To fix this, open your QuickBooks Online account using a private browser.

Here are the keyboard shortcuts you can use:

• Google Chrome: press Ctrl + Shift + N 
• Mozilla Firefox and Microsoft Edge: press Ctrl + Shift + P
• Safari: press Command + Shift + N

Once signed in, see if you still get the error. If this works, clear the cache of your regular browser to get a clean slate. You can also use other supported browsers if private mode browsing doesn’t work.

You can also seek self-help articles on our QuickBooks help articles page, this is to help QuickBooks users like you finish your work in no time.

If you need further assistance with accessing your QBO account, please post a response below. I'm always here to help you. Have a good one.