Thanks for reaching out to the Community about your concern, John_TN. 

It’s my priority that you can export the tax form worksheets seamlessly. We’ll be performing some troubleshooting steps to fix this, which includes the following:

• Checking the system requirements
• Repairing the Excel file.

Let's make sure your computer meets the program’s system requirements.

This will ensure the application is compatible with your setup and will help avoid unexpected behavior when using it. This link provide detailed information about the system requirements for QuickBooks version: System requirements for QuickBooks Desktop 2021. 

However, if your version is compatible, repair Excel to fix the issue. The Repair an Office application link contains detailed instructions about the process. If none of these suggestions work, perform Steps 4-5 in the Repair an Office application article.

Here's a helpful resource about exporting reports to Excel: Export reports as Excel workbooks in QBDT 

Please don't hesitate to respond in this thread if you have any other questions. The Community will be here to help. Have a great weekend. Stay safe!