Cisco Umbrella Blocking Websites May 2026

🛑 Getting a “Blocked by Cisco Umbrella” message? Here’s why.

Why "Cisco Umbrella blocking websites" is a feature, not a bug.

To an end user, it looks like a barrier. To a security team, it looks like a bullet dodged. cisco umbrella blocking websites

👇 Drop your questions below. I can refine the tone further.

Here are a few options for your post, depending on the audience is (IT admin vs. general employee) and where you are posting (Internal Slack/Teams, IT ticket response, or LinkedIn blog). Option 1: For Internal Employees (Slack, Teams, or Email) Use this tone: Helpful, slightly frustrated (on their behalf), but clear that they cannot bypass it. 🛑 Getting a “Blocked by Cisco Umbrella” message

You’ve seen the message: “This website is blocked by Cisco Umbrella.”

You might have tried to visit a site today and seen a blue/red block page citing "Cisco Umbrella." Don't worry—your device isn't broken. To an end user, it looks like a barrier

Troubleshooting Cisco Umbrella Website Blocks (False Positives)