I'm having an ongoing issue with table frames in ArcGIS Pro 2.4. Every time I open a project, the table frames are gone and there is a red exclamation point next to the source tables. The properties pane has the correct source, but says that the tables are unavailable and I have to resource them. This happens every single time without fail. This is especially problematic with a large, detailed layout with multiple table frames. When I try to reopen this particular project, it takes forever, and then Pro crashes. I have to open the project on another virtual machine running Windows 7, save it, and then reopen it on my Windows 10 machine.
Did your virtualized environment work well in ArcGIS Pro 2.3? or before?
Do you see any changes in requirements for 2.4?
And as for Windows 7, an update is required for it compared to 2.3 and prior versions
I don't generally work in the virtual environment in Windows 7. I'm just saying that once I close a project in 2.4 and Windows 10, the table frames are again unsourced and the project repeatedly crashes Pro when I try to open it. I can only reopen the project on a VM with 2.4 and Windows 7 at this point. I have to save it as is, reopen in Windows 10 and resource the tables. Rinse,repeat. I've been keeping the project open as long as possible, but eventually it becomes a memory drain (~8GB) and I have to close it.
I'm currently unaware of any known issue similar to the one you describe above. Can you contact Esri Support? They are better equipped to handle troubleshooting steps and gather bug data. They can be contacted at https://support.esri.com/en/contact-tech-support.