A Windows security update from CrowdStrike has created massive outages and system failures across the globe.
How long that could take is unknowable at this point.
It could take some time to track and update every system that has been affected by this glitch.

The BSOD is something no one wants to see.Kolonko / Getty Images
Even banks and retail companies have experienced difficulties from this issue.
So, if you’re experiencing long delays today, here’s the explanation.
Just remember, the service people you’re dealing with didn’t cause the problem.