Claude, the AI chatbot from Anthropic, went down early Friday, with users unable to log in to the app or its coding tool. It hit while Microsoft was still fighting a global Outlook and Teams outage that started Thursday and has now dragged into a second day.

Is Claude Down Right Now?

Yes, for many users. Anthropic posted at 4:58 a.m. Eastern that it was investigating an issue with users logging in to Claude.ai and Claude Code, its status page shows.

The page lists a major outage on claude.ai and a partial outage on Claude Code and the developer console at platform.claude.com. At 6:05 a.m. Eastern, Anthropic said it had deployed a fix and was watching for recovery. Claude Code and the developer console are back to normal on the status page, but claude.ai still shows a major outage. Anthropic has not said what caused it.

Is Claude Down Because of Microsoft?

Anthropic has not linked this morning’s login trouble to Microsoft. But a second, separate problem on its status page is Microsoft’s doing.

Since Thursday afternoon, the tools that let Claude read Outlook mail, calendars and files have been failing for most requests, and Claude for Outlook is still affected. “This issue is caused by a Microsoft 365 service incident,” Anthropic wrote.

OpenAI reported the same thing on Thursday, saying its Microsoft connectors for ChatGPT were broken and tools were not working as expected, its status page shows.

Is Microsoft Outlook Still Down?

Microsoft’s problems began Thursday, when its status account warned of trouble reaching Exchange Online mailboxes across the Americas.

By Friday morning its service page still showed problems. Microsoft said a fix it rolled out was not taking as expected, and there was no sign of a cyberattack, the Associated Press reported.

More than 130,000 people reported Outlook problems to Downdetector at the peak on Thursday, AP reported.

How Big Is the Microsoft Outage?

It reached well beyond office email. Government offices in Singapore, the Philippines and Japan were hit, along with India’s IndiGo airline and parts of Britain’s National Health Service, AP reported.

Australian officials said Microsoft compared it to the 2024 CrowdStrike failure that grounded flights and froze computers around the world.

For South Jersey, that means anyone whose office, school or town hall runs on Outlook or Teams may still be stuck on Friday. Microsoft’s status page is the place to check before calling IT.

Images are screenshots of the Claude status page, taken Friday morning.