Username Not Found or Login Errors in Sandbox Workspaces

Last updated: January 4, 2026

Issue

When trying to connect a device in a sandbox workspace, you may encounter login errors such as:

  • "Username is not found"

  • "Invalid credentials"

  • Authentication failures

  • Login not working despite correct credentials

Cause

Sandbox workspaces in Seam are designed for testing and development with simulated devices. Physical devices cannot be connected through sandbox workspaces because they require production-level authentication and access to the manufacturer's platform.

Sandbox workspaces only support test devices and simulated data for API development and testing purposes.

Resolution

To successfully connect your physical device to Seam:

  1. Create a production workspace in your Seam Console

  2. Connect your device account using the production workspace

  3. Add your device through the production workspace connection

Steps to Create a Production Workspace

  1. Navigate to your Seam Console

  2. Click on the workspace selector in the top navigation

  3. Select "Create New Workspace"

  4. Make sure "Sandbox mode" is toggled off.

  5. Click "Create Workspace" to save.

Connecting Your Device

Once you have a production workspace:

  1. Go to "Devices" in your production workspace

  2. Click "+ Add Devices"

  3. Select your device manufacturer from the list

  4. Enter your manufacturer account credentials

  5. Follow the prompts to authorize the connection

Your device should now connect successfully and appear in your devices list.

Additional Information

  • Sandbox workspaces are only meant for testing API calls and workflows with simulated devices

  • All physical devices must be connected through production workspaces

  • Your production workspace credentials and API keys will be different from your sandbox credentials

  • If you continue to experience login issues in a production workspace, verify your credentials with the manufacturer's app or website first