Outage in Claude

Claude Desktop failing to open for some users

Resolved Minor

February 25, 2026 - Started 1 day ago - Lasted about 8 hours
Official incident page

Incident Report

Summary AI Generated

The Claude Desktop app failed to start for some Windows users and macOS users on older releases due to an identified technical issue. The problem affected the claude.ai service and prevented affected users from launching the desktop application for 7.6 hours. The issue was resolved by releasing version 1.1.4328 with a fix, requiring users to download the latest version from the official website.

We have identified an issue leading to the Claude Desktop app failing to start for a subset of Windows users and macOS users on older macOS releases. We are working on rolling out a fix.

Components affected

Claude claude.ai

Latest Updates ( sorted recent to last )

RESOLVED 1 day ago - at 02/25/2026 11:54PM

If Claude fails to launch on your computer, please download the latest version from download the latest version on https://claude.com/download. We have now fixed the underlying issue.

MONITORING 1 day ago - at 02/25/2026 05:58PM

We have released a version that fixes the issue. Please download the latest version of Claude on https://claude.com/download to update to at least v1.1.4328.

IDENTIFIED 1 day ago - at 02/25/2026 05:30PM

We continue to work on getting a fix deployed as quickly as possible.

IDENTIFIED 1 day ago - at 02/25/2026 04:31PM

We are currently working on deploying a fix to the Claude Desktop app.

MONITORING 1 day ago - at 02/25/2026 04:23PM

A fix has been deployed and we're monitoring error rates.

INVESTIGATING 1 day ago - at 02/25/2026 04:23PM

We have identified an issue leading to the Claude Desktop app failing to start for a subset of Windows users and macOS users on older macOS releases. We are working on rolling out a fix.

Latest Claude outages

Outage in usage reporting - about 16 hours ago

Elevated errors on Claude Opus 4.6 - 1 day ago

Elevated errors on Claude Sonnet 4.6 and Opus 4.6 - 2 days ago

Elevated errors on Claude Sonnet 4.6 - 3 days ago

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