I'm aware of how valuable your time is and appreciate the effort you put into posting to the Community, @Business Plan Man.
Let me tell you what your computer needs to run QuickBooks Desktop with ease.
When you launch QBDT Pro 2021, you'll need Internet Explorer 11 and access to the internet (32-bit). That's why you receive the error message to enable IE while opening.
Here's some more information about the program compatibility: System requirements for QuickBooks Desktop 2021.
I'll also add this article that includes resolution if you have trouble opening QBDT: Run Quick Fix my Program from the QuickBooks Tools Hub.
Always know that we're here to back you up if you have other concerns about handling QuickBooks. Just leave a reply below to notify us. Keep safe.
