Hi there, Darci3.

I can see how this error has taken hold of the tasks you'll have to complete. I'm here to help you get back on track by performing some troubleshooting steps.

The desktop program won't open if there are remaining components running in the background. Let's go to Task Manager to close them.

Here's how:

1. Log in as the Windows admin.
2. Press Ctrl+Shift+Esc altogether to bring up the Task Manager.
3. Go to the Users tab to show the processes for all users.
4. Highlight all applications that start with .qb, QuickBooks, or Intuit.
5. Once done, click End Task.

Then, use the repair tool to go over the files and check possible damaged components. Before we begin, make a backup copy of the company file to ensure that no data is lost. After that, proceed with the steps below to repair QuickBooks.

Here's how:

1. Go to the Start menu and choose Control Panel.
2. Click on Programs and Features to open the Uninstall or change a program screen.
3. Select Uninstall a Program and click on QuickBooks and tap the Uninstall/Change option.
4. Press Continue and Next.
5. Tap the Repair menu and then Next.
6. When the repair wizard appears, simply follow the onscreen instructions to finish the process.

You may also encounter an error while repairing the program file. This can happen if the file is already in use.  You'll have to shutdown QuickBooks completely before you begin the repair process,

If you continue to get the same error, uninstall and reinstall your QuickBooks to start on a clean slate. For additional resources, I've included an article to help you troubleshoot the following: QuickBooks Desktop doesn't start or won't open.

You can browse our online resources to learn how to easily navigate any accounting tasks in QuickBooks Desktop (QBDT). You can access information about payroll, taxes, banking, inventory, etc. from there. 

Let me know how it goes after performing the troubleshooting steps. I'll get back to help you the best that I can. Have a good one.