# Anthropic Claude down: Why it said it was unable to authenticate code > HelixNews · Web page: https://helixnews.one/story/3117678 · All pages for agents: https://helixnews.one/llms.txt 3 outlets covering · First listed: Mashable, Nov 13, 2026, 4:46 AM · Read it: Following a massive outage of Microsoft services, Anthropic Claude is having some issues of its own, though it's too early to tell whether the two are related. ## Who's covering it In the order they published: - Nov 13, 2026, 4:20 AM: [Claude Is Down]() — Hacker News (Aggregator, United States) - Nov 13, 2026, 4:34 AM: [Anthropic investigates authentication errors hitting Claude AI and Claude Code]() — Crypto Briefing (Specialist) Service disruptions in AI tools can erode user trust, hinder workflow efficiency, and potentially impact Anthropic's growth and subscription rates. - Nov 13, 2026, 4:46 AM: [Anthropic Claude down: Why it said it was unable to authenticate code]() — Mashable (Digital news, United States) Following a massive outage of Microsoft services, Anthropic Claude is having some issues of its own, though it's too early to tell whether the two are related.