Hi there, @Cat981.

Let's repair your software to determine why it is showing a prompt message keeping you from working with your invoices and resolve it.

1. Close QuickBooks.
2. Download the QuickBooks Tool hub.
3. Open and install the downloaded file.
4. On the QuickBooks Tool app, select Program Problems.
5. Click Quick Fix my Program.

But if the steps above didn't make any changes to the problem currently raised, let's continue our troubleshooting steps by following the steps below:

1. Close QuickBooks.
2. Go to Start.
3. Select Control Panel.
4. Under Program and Features, select Uninstall a Program.
5. From the list of applications, select QuickBooks.
6. Select Uninstall/Change.
7. Click Repair.

Once done, restart your computer first before working again with QuickBooks. Then, right-click on the QuickBooks icon on your Desktop, select Run as Administrator, and open your company files accordingly.

You may also read this reference for other steps to follow to resolve problems that cause the QuickBooks desktop to stop working: Fix Issues to Stop QuickBooks from Freezing and Use the QuickBooks Tool Hub.

I've got you covered if you have questions while accessing your company file in QuickBooks. Let me know by leaving a comment below using the Reply option. Take care always!