Hi @Blondie,

Let's get your QuickBooks Desktop (QBDT) Pro 2020 to save PDF files. 

In case you missed it, a complete set of troubleshooting steps have been provided by my colleague @KhimG, at the very top of this thread. 

You can also download the QuickBooks Tools Hub to repair this issue.

Here's how:

1. Download the QuickBooks Tools Hub.
2. Open the downloaded file.
3. Follow the on-screen prompts to proceed with the installation.

At this point, you'll have a QuickBooks Tools Hub icon on your desktop screen. Follow these steps to run the QuickBooks PDF & Print Repair Tool:

1. Open the recently installed QuickBooks Tools Hub.
2. Select Program Problems.
3. Choose QuickBooks PDF & Print Repair Tool.

Right after, attempt to save a PDF from QBDT again to see if that works. 

Further troubleshooting steps can be found in this article: Troubleshoot PDF and Print problems with QuickBooks Desktop. Scroll down to Solution 2: Reset your temp folder permissions to continue.

I'll be around in case you need further assistance. Simply leave a comment below, and I'll get back to you.