Update

Hello, Carol839.

Before contacting support, let's perform some troubleshooting steps to get QuickBooks Desktop back up and running. Could you also share the error message you received before it closed out? Any information can assist me in determining the best course of action to resolve this.

Let's begin by running QuickBooks as an Administrator and relaunching the software. Right-click on the QuickBooks icon on your desktop and select Run as Administrator.

If that don't work, you can repair QuickBooks to update the installation permissions and open the software.

Here's how:

1. Open the Windows Start menu, then click Control Panel.
2. Select Programs and Features, then Uninstall a Program.
3. Choose QuickBooks from the list of programs, then click Uninstall/Change.
4. Select Continue, or Next.
5. Click Repair, then Next.
6. Once it's done, hit Finish.

If the issue persists, you can read the following articles below for additional steps to take:

• Fix QuickBooks Desktop Update Errors
• QuickBooks Desktop doesn't start or won't open

In case you need some tips or related links in the future while working with QuickBooks, you can visit our Help articles page to find one.

You can reply to this post again if you need further assistance in QuickBooks. We're always available to help you.

@Carol839 

Which QB Desktop year version do you have? Share a screenshot of your error message by clicking the Photos icon on the menu.

I was trying to do the update again so that I could see what error message I received when it told me that it had to restart my computer and shut down. Since then, I have been unable to even open Quickbooks. 

Which QBD year version and Windows OS do you run?

Try to uninstall your QBD and reinstall it from scratch.