MCP browser tools not working

Support Help
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3

Hey, thanks for the report. This is a known issue with DevTools in the latest versions. Please try this:

  1. Go to Settings > Tools & MCP > Browser Automation
  2. Disable any external browser MCP servers you might have set up
  3. Turn off Browser Automation completely
  4. Turn it back on and select Browser Tab
  5. Fully restart Cursor (quit the process, not just close the window)

This sequence has helped a few users. A similar thread is here: Tab Browser not accessible to AI again

If that doesn’t help, please share:

  • Your Cursor version (Help > About)
  • Your OS
  • The Request ID from the failed attempt (chat menu > Copy Request ID)

The team is aware of the issue. Your report helps increase visibility.