I have been receiving a message recently saying my copy of windows is not genuine. I bought it directly from Dell a few years ago and this problem just recently stated happening.
The associated code is 0x8004fe21. Dell has been less than helpful, despite me having purchased the full warranty and them saying that I would be covered if I have any problems with the PC. Other issues I've been having are my laptop randomly shutting off, but this is probably do to the huge motherboard flexing a little...another thing I've been trying to get Dell to fix properly for over 6 months.
Anyways...the issue is the 0x8004fe21 windows not genuine...any help would be appreciated! Let me know what info you need and how to get it.