Thanks for coming here, wedgie75-hotmail.

If you're having issues opening your QuickBooks Online (QBO) account, we can try performing basic browser troubleshooting. Issues like this can often be caused by some browser-related issue. Start by logging in to your QBO account using an incognito or private browser. Since this doesn't store data in the cache, it is the best place to isolate browser issues.

Kindly use either of the following shortcut keys:
 

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

If it works, let’s clear the cache of your regular browser. This helps the browser to function efficiently. You can also use other compatible browsers if private browsing doesn’t work.

If the above steps don't fix the error, may I know the exact error message? This way I can check if there are other related cases so I can provide a more accurate solution 

Also, you can always visit our Manage your account page for reference, to learn some tips and tricks on managing your account.

I'm just a post away if you have other questions or concerns. We're always here to lend a hand. Thanks for posting and I wish you a lovely day ahead.