I'm trying to install the Windows 10 update 1803 which is the big feature update for April 2018. It downloaded fine and gave a warning about a long update process. I confirmed starting to update and the PC worked for a while and then restarted.
Since then it has been stuck on the message: "Working on updates 0% Don't turn off your PC, this will take a while". It's been around 2.5 hours and no change is seen. The wheel is spinning though so it's not like the software is completely stuck.
What is a typical time for this kind of update? I searched online and all I could find is cases where it's taking a few hours but never where it was stuck at 0%.
At what point do I try to restart the PC? 8 hours? a day?