Dell has nothing to do with Windows Update. Microsoft releases windows updates. See this

https://blogs.windows.com/

Some models are not yet ready for the update. Many glitches have been found so don't force an update. See this-

https://support.microsoft.com/en-us/help/4551203/updating-to-windows-10-version-2004-on-devices-with-hypervisor-protect

While we're on this subject, has anyone installed the 2004 upgrade if so how did you install it? WU or MCT Assistant either upgrade or Repair Install?

I've involved in 2 different  Windows 10 forums, So I see enough issues that I won't commit for a while yet. I have Feature upgrades blocked using Gpedit

But would like to hear the experiences of any that do Install it on there Dell Notebook