Troubleshooting Sequences That Won't Launch or Start

Last updated: October 21, 2026

If your sequences are failing to launch or not starting as expected, there are a few common causes and simple steps you can take to resolve the issue.

Avoid Using Multiple Browser Windows Simultaneously

Running the platform in more than one browser window at the same time can cause conflicts in the backend. When multiple actions occur in parallel across windows, this can result in save errors that prevent sequences from launching properly.

Recommendation: Always use the platform in a single browser window at a time. Close any additional tabs or windows where the platform is open, then attempt to launch your sequence again.

Copilot leads not reviewed in an Active Sequence

If you have an active Copilot sequence but haven't reviewed leads in your Tasks > To review tab, messages won't be sent to your leads (cfr. 📄 Approving or declining a lead (Copilot mode)).

You need to approve a lead in a Copilot sequence in order for it to start sending messages.

Recommendation: head over to Tasks > To review as soon as you launch the copilot sequence, in order to approve a few leads to get the sequence started.

General Troubleshooting Steps

  1. Close all extra browser windows or tabs where the platform is open, leaving only one active session.

  2. Ask the Topo AI Agent why the sequence isn't starting

  3. Check if you have copilot leads to review

    1. under Tasks > To review (legacy, teams and enterprise plans)

    2. under Sequences > sequence page > Leads (starter plan)

  4. Check if you have many active sequences running with the same Sender Identity, thus clogging up its capacity

  5. If the issue persists after following these steps, contact support for further assistance.