https://www.bleepingcomputer.com/news/microsoft/microsoft-onedrive-down-worldwide-following-claims-of-ddos-attacks/
Microsoft is investigating an ongoing outage that is preventing OneDrive customers from accessing the cloud file hosting service worldwide, just as a threat actor known as 'Anonymous Sudan' claims to be DDoSing the service
I'm feeling rather smug and justified telling my clients to keep files on a local server that they control rather than "the cloud" someone else's computer.
I'm not a big fan of monolithic cloud ecosystems myself. However, to be fair, it's like lambasting someone for being late to work because a deranged trucker blocked the only road they can take to work.
"The impacted browser URL is onedrive.live.com. Access to the OneDrive service using the desktop client, a synchronization client or Office clients are not impacted," Microsoft said.
So, just the website then.
And that's only for the personal OneDrive service. Business accounts are "https://YourOrg-my.sharepoint.com" for OneDrive access.