I can't open my 2019 Quickbook desktop program

QB Desktop 2019 is outdated and I believe they won't release any patches for it. Contact me in private and we can share some options to consider, including upgrading your data to QB Desktop 2024 Mac Plus.

Hello. It is important to me to provide you with the accurate reason why your 2019 QuickBooks Desktop won't open after installing the new macOS version 14.0, jurape4562. Then, ensure that you can open it by performing some upgrades.
 

Fiat Lux - ASIA is correct. It's because QuickBooks Desktop 2019 is outdated and not compatible with the new macOS version. The 2019 version isn't optimized to work seamlessly with the latest macOS update. Thus, you may experience compatibility issues and difficulties when accessing QuickBooks Desktop 2019 on your updated macOS system. 
 

You're right that you can consider upgrading to a newer version for a smooth operation and compatibility. Here's how:

1. Go to this link and answer the question: Downloads & Updates. Then, Next.
2. Select QuickBooks Mac Desktop.
3. Pick the appropriate version. You can update to these released patches:
   • QuickBooks Mac Plus 2024 R1.1
   • QuickBooks Mac Plus 2023 R5.2
   • QuickBooks Mac Plus 2022 R10.2
   • QuickBooks Mac 2021 R13.3
4. Hit Search and follow the instructions.
   
5. Click Download or Get the latest updates.

To learn about the system requirements for QuickBooks Desktop, you can refer to the articles provided. It contains detailed information regarding the specific hardware and software specifications necessary to run QuickBooks smoothly on your device: 

• System requirements for QuickBooks Desktop 2023.
• System requirements for QuickBooks Desktop 2022.

If you have other concerns or encounter any issues, when opening your QuickBooks, you can post here again, and I'll help you find the best solution.