The outage appears to be affecting Windows PCs globally, including Sky News in the UK which was not able to broadcast live TV first thing on Friday morning.
Looks like Crowdstrike issued an update that borked all it's customers, which are many. Fix has been issued now, but it shows how relying on a single company for services can cause major global outages.
Microsoft, Google, Amazon, Cloudflare, one provider has lots of power in it's hands and if/when they go down the effect is massive.
The fix doesn't help much for already affected systems, as they're even unable to boot. Only workaround is to manually delete the files in safe mode for every system one by one, which is even more difficult if it's bitlocker protected.
Absolutely crazy that they managed to screw up this bad.