Win 10
I have four old (vintage 2008/2009) desktop computers and an old (vintage 2009) laptop. Three of the desktops and the laptop are running Windows 10 Home Edition, and all took the Windows 10 Version 2004 feature update without any issues. The remaining desktop is running Windows 10 Pro and it keeps getting the "not ready" message - I check it every day.
Based on this small sample, my guess is that the Version 2004 feature update isn't yet available for computers that are running Windows 10 Pro.
No, my Windows 10 Pro machines are running great.
It appears to me that you have isolated a thread of my problem, because I also have Windows 10 Pro - which was included in a Western Digital Solid State Drive upgrade. I do not know if it has anything to do with the problem, BUT that upgrade replaced my previous Windows 7 Home version. Conclusion: Microsoft has us users playing guessing games. Thanks, Grant Collar
I finally discovered what seems to be the reason why my old Windows 10 Pro desktop isn't yet ready for the Version 2004 feature update. According to the information from the relevant "Learn more" page that accompanies the notice, in addition to a list of a bunch of yet unresolved problems, it seems that there are compatibility issues with some NVIDIA Legacy GPUs (link to the list: https://www.nvidia.com/en-us/drivers/unix/legacy-gpu/) . My old desktop has one of them - NVIDIA GeForce 6150SE nForce 430. The problem is being investigated, and Microsoft & NVIDIA are supposedly working on developing an update to fix it.
I hope this will be helpful to some of you.
Thank you, You have elegantly expressed my own assessment like a twin. Grant Collar