Install
I've got your covered, @77874040.
You can open or restore your QuickBooks working company file. I can guide you in doing so.
- Let's ensure all users are logged out of your company file.
- Open your new version of QuickBooks Desktop.
- From the No Company Open window, go to Open or Restore Company.
- Select Open a company file, then Next.
- Browse your computer for your company file, then click Open.
- Sign in to your company file as an admin user.
- Before you upgrade, QuickBooks automatically creates a backup of your existing company file. You can select Change this default location to save the backup in a specific folder.
- Select Update Now to start the upgrade.
- When QuickBooks is finished, select Done.
If you're unable to locate your working company file, you can use the Find a company file feature. 
From here, you can easily view all the company file stored in your computer or device and restore it. 
You can read through this article for more detailed information about the process: Upgrade your company files after switching to a new version of QuickBooks Desktop.
Also, I've added these resources to help you fix errors or issues when opening your company file:
- What to do if you can't open your company file in QuickBooks Desktop
- Resolve Error -6000, when opening a company file
Get back to us here if you have other questions or concerns about using the new QuickBooks versions. I'm just a few clicks away.
