Hello there, @fcs659.

Let me share with you my ideas to open your company file in QuickBooks Desktop account. You can go back to the QuickBooks Desktop version where your company file is created and open the file. Once done, update your company file as well your QuickBooks Desktop version manually.

Also, you weren't able to update the company file if you're using a different product. For example, if your company file was created in QuickBooks Desktop Pro version, you cannot update the file in the QuickBooks Desktop Enterprise version.

Follow these steps on how to manually update your QuickBooks Desktop version. Here's how:

1. Close your company files and your QuickBooks Desktop account.
2. Click the Windows Start icon.
3. Search for QuickBooks Desktop.
4. Right-click the icon and select Run as administrator.
5. While on the No Company Open screen, go to the Help menu and choose Update QuickBooks Desktop.
6. Go to the Options tab.
7. Select Mark All and then hit the Save button.
8. Click the Update Now tab and choose the Reset Update checkbox.
9. Select Get Updates.

Note: When the install finishes, restart your computer.
 

Once done, you can refer to this article for the steps on how to update your company file in your QuickBooks Desktop account: Upgrade your company files after switching to a new version of QuickBooks Desktop.

You can also visit our QuickBooks Desktop Help Article in case you'll need help updating the latest release patch in your account.

Fill me in if you need more help by leaving a comment below. I'll be around in the Community to help. Take care and have a great day!