I'm here to address your concern with this query with your QuickBooks Desktop (QBDT) account, Ainav.

First, open the sample file, then repair and reinstall QuickBooks Desktop (QBDT). If the issue persists, I recommend contacting our Support Team for further assistance. Here's how:

1. Close QuickBooks.
2. Download the most recent version (1.6.0.8) of the QuickBooks Tool Hub. Save the file somewhere you can easily find it (like your Downloads folder or your Windows desktop). 
3. Open the file you downloaded (QuickBooksToolHub.exe).
4. Follow the on-screen steps to install and agree to the terms and conditions.
5. When the installation finishes, double-click the icon on your Windows desktop to open the tool hub.

You check this article to learn how to run the repair tool for QuickBooks Desktop for Windows: Repair your QuickBooks Desktop for Windows.

Follow the steps below to reinstall. Here's how:

1. Open the Windows Start menu. Search for “Control Panel”, then open Control Panel.
2. Select Programs and Features or Uninstall a Program.
3. From the list of programs, select the version of QuickBooks Desktop you want to remove.
4. Select Uninstall/Change, Remove, and then Next.  
5. If you don’t see this option, sign out and sign back into Windows as an admin (or a user with admin rights).

For more details, on how to install QBDT again so it renames your QB folders to fix company file issues, check this article: Reinstall QuickBooks Desktop.

To contact our Support Team. Here's how:

1. Open QuickBooks.
2. Go to Help, then select QuickBooks Desktop Help/Contact Us.
3. Enter the question, keyword, or topic you need help with.

Check this article for our Support Team and learn how to get help with your QuickBooks product or service: Get help with QuickBooks products and services.

Additionally, you might want to check out this article for additional support on resolving this issue or finding answers to common questions: Upgrade Internet Explorer to open QuickBooks Desktop.

I'll be available anytime in this thread if you have additional questions about your Company file in QBDT. Just keep us posted so we can further provide help. Keep safe!