I'll share information about your concern with the encountered error message in QuickBooks Online (QBO), Laraib.
As per checking, this error message you've encountered when managing transactions has been closed. With that, please ensure you're the only user when logging into your account.
After that, let's fix this by accessing your QuickBooks account in a private window to prevent the error message you've encountered from occurring. You can use either of the following keys:
- Safari: Control + Option + P
- Google Chrome: Press Ctrl + Shift + N
- Firefox or Internet Explorer: Ctrl + Shift + P
Once you can go through it, you can go back to the regular browser and clear its cache to speed up the process when managing invoice transactions in your QuickBooks account. If you get the same result, I recommend signing out and signing in again to your QuickBooks account, then you can also restart your browser or switch to another supported browser.
Additionally, you can check this article if you want to personalize your sales forms: Customize invoices, estimates, and sales receipts in QuickBooks Online.
If you have further questions about error message or any QuickBooks-related concerns. You can always reply to this thread. We're always here to help you.
