A message has appeared on some users (mainly Pro apparently) desktops saying Windows needs activating. Microsoft have acknowledged the fault and will release a fix asap:
Windows 10 suddenly deactivated
activation
activation server
emergingissue
error
fix
home license
japan
license
microsoft
patience
pro version
south korea
support
temporary issue
troubleshooting
update
usa
user reports
v1809
windows 10
