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@raimundo_9108 are you signed in with an Adobe account that has access to AI-powered features (paid feature)—some tools are only available with specific plans like Acrobat Pro or Acrobat AI Assistant. Also, check that your PDF is text-based (not just scanned images), as summaries rely on readable content. If everything looks good and it’s still not working, try updating Acrobat to the latest version and restarting the app.