How do I open customers from Sales

Hello, @rose33.

Let's try viewing your customers' information using a private browser or incognito browser. This way, we can isolate this for a possible browser-related issue. You can use any of these keyboard shortcuts:

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

Once you're able to log in successfully, let's view your customers' list from the Sales menu.

1. Go to the Sales menu.
2. Choose the Customer tab.

If you're able to navigate around the Customer tab without the invalid entry prompt, you'd want to clear your regular browser's cache. The stored history in your regular browser can be corrupted and can cause unexpected behavior in the program. Also, you can use other web browsers. Lastly, you can try running the browser health checkup tool to see if your current browser is compatible with QuickBooks Online.

Fill me in if you have other questions about managing your customer information in QuickBooks. I'm always here to help.