Quickbooks online: The Customers Tab is no longer functional. When I click on it I no longer get an alphabetical list of my customers. What happened to Customers List?

Hi there, @karen84. 

There are a few reasons why QuickBooks Online behaves unexpectedly. It could be a browser-related issue that can be resolved by doing a few basic troubleshooting steps. 

First off, let's use an incognito or a private browser to confirm the issue. Open any browser of your choice, then follow these shortcut keys to use an incognito window: 

• Chrome simply press Ctrl + Shift + N.
• Mozilla Firefox and Internet Explorer, press Ctrl + Shift + P.
• Safari, press Command + Shift + N. Make sure you're using the latest version.

Check your customer's list and see if it's now listed alphabetically, then follow the steps to clear your browsing data if it does. This will allow QuickBooks to load as a fresh page to remove any error messages or glitches that may be standing in the way of certain features.

Otherwise, try using another supported, up-to-date browser. 

Let me know if you need further assistance. I'm here to help you some more.