Anthropic Claude down: Why it said it was unable to authenticate code

Anthropic said on its official Claude Status page that it is investigating an issue with users authenticating to Claude.ai and Claude Code, with some users reporting login trouble on X. The Claude outage follows a massive, still-unresolved outage affecting multiple Microsoft services, though Anthropic did not say whether the two incidents are related. Anthropic said it will provide an update as soon as possible.

Anthropic Claude down: Why it said it was unable to authenticate code Stan Schroeder https://mashable.com/author/stan-schroeder Read Full Bio https://mashable.com/author/stan-schroeder It's going to be a tough day to do anything online. Following a massive outage affecting multiple Microsoft services https://mashable.com/tech/microsoft-outlook-outage-cause-revealed-nov-12-2026 that still hasn't been resolved, Anthropic's AI assistant Claude is now exhibiting issues of its own. "We are investigating an issue with users authenticating to Claude.ai http://Claude.ai and Claude Code. We will provide an update as soon as possible," wrote Anthropic on the company's official Claude Status page https://status.claude.com/ . Terms of Use https://www.ziffdavis.com/terms-of-use and Privacy Policy https://www.ziffdavis.com/ztg-privacy-policy . You May Also Like At Mashable, we're logging into Claude fine, but we've seen reports on X https://x.com/SimonasLTU1/status/2121185439180534267 that some users are having trouble logging in. This Tweet is currently unavailable. It might be loading or has been removed. https://twitter.com/SimonasLTU1/status/2121185439180534267 It's unclear whether Anthropic's problems are related to Microsoft's troubles. This is a developing story. We'll update this article when we know more. Topics Artificial Intelligence https://mashable.com/category/artificial-intelligence Anthropic https://mashable.com/category/anthropic Stan is a Senior Editor at Mashable, where he has worked since 2007. He's got more battery-powered gadgets and band t-shirts than you. He writes about the next groundbreaking thing. Typically, this is a phone, a coin, or a car. His ultimate goal is to know something about everything.