Could not connect to the campaign error on browser calls

Did you see the error “Could not connect to the campaign, please refresh and try again” while joining a Call Center campaign from your browser?
This usually happens because your browser has not allowed microphone access. Here’s how to fix it.

Why does this error appear

When you join a campaign, CallHub needs microphone access to place calls. If Chrome blocks the microphone, you may see errors like:

• Not Allowed Error
• Could not connect to the campaign, please refresh and try again

How to fix it

1. Open Chrome microphone settings

• Type this link into your browser:
  chrome://settings/content/microphone?search=microphone

• Or, go to Chrome Settings > Privacy and Security > Site settings > Microphone.

2. Allow microphone access for CallHub

• In the settings, make sure https://app.callhub.io is listed under Allowed to use your microphone.

3. Re-login to CallHub

• Log out and log back in.
• When you join a campaign, Chrome will show a prompt asking to use your microphone.
• Click Allow.

✅ Once permissions are enabled, you’ll be able to join the campaign and make calls without interruption.