opening company file on updated quickbooks desktop for mac

Hi there, @JacobsLaw.

Thanks for taking the time to reached out to us. I'm here to help and ensure to isolate this problem so you keep your QuickBooks up and running. 

Once a QuickBooks function is damage, you'll need to uninstall QuickBooks Desktop for Mac and reinstall the program using the clean install. But before doing so, be sure you have your QuickBooks Desktop diownload file, and the license number is ready. 

Now, let me walk you through the steps on how to uninstall QuickBooks Mac Desktop:

1. Close your QuickBooks.
2. While on your desktop, from the Finder menu, select Go. 
3. Choose Applications.
4. Select the QuickBooks icon, and drag/move it to the Trash. 

Next, you'll have to remove both PLIST files from the User folder as well as the System folder. This will revert all preferences back to its default settings, which could cause the product to be unregistered. 

To remove the PLIST files in the user folder, here's how: 

1. From the Finder menu, select Go.
2. Hold down the Opinion key, then choose Library.
3. Open the Preferences folder.
4. Locate the PLIST files with QuickBooks and your version in the name, then move them to the Trash. You'll Delete everything containing "com.intuit.QuickBooks20XX."
5. Empty the Trash.

Here's how to remove the PLIST files in the system folder: 

1. From a new Finder window or the icon on the desktop, open the Macintosh HD.
2. Go to Library, then Preferences folder.
3. Locate the PLIST files with QuickBooks and your version in the name, then move them to the Trash. You'll need to Delete everything containing "com.intuit.QuickBooks20XX."
4. Empty the Trash.

Once done, you can now restart your device and reinstall the QuickBooks. To do this, you can check this article for the detailed steps: Install and set up QuickBooks Mac Desktop.

If you need further assistance with the steps. I recommend calling our QuickBooks Desktop Mac Support. They have additional tools to pull up your account and do a remote session. 

Here's how you can contact our phone support: 

1. Click this link: https://help.quickbooks.intuit.com/en_US/contact.
2. Select QuickBooks Mac Desktop.
3. Type-in Technical Support on the search bar.
4. And click Get the Phone number below. 

That should do it! Please let me know how it goes by clicking the Reply button below. I'm always here to help if you have any other questions. Have a good one.