Hybrid domain isn't an accepted domain for the cloud organization error when you run the Hybrid Configuration wizard

Original KB number:   3067179

Symptoms

When you run the Hybrid Configuration wizard, you receive a Hybrid domain <Domain> isn't an accepted domain for the cloud organization error message. The full text of this message resembles the following:

ERROR:Updating hybrid configuration failed with error 'Subtask CheckPrereqs execution failed: Check Prerequisites Microsoft.Exchange.Data.Common.LocalizedException: Hybrid domain contoso.com isn't an accepted domain for the cloud organization.
Hybrid domain contoso.com isn't an accepted domain for the cloud organization.

Cause

This problem occurs if the accepted domain is missing.

Resolution

To resolve this issue, follow these steps:

  1. Make sure that domains are added to your on-premises organization as accepted domains. For more information, see Accepted domains.

  2. Make sure that domains are added to Microsoft Exchange Online as accepted domains. For more information, see Verify a domain at any domain name registrar.

  3. Rerun the Hybrid Configuration wizard. When you're prompted to add your domain or domains, select the domains that you added. For more information, see step 5 of Create a hybrid deployment with the Hybrid Configuration Wizard.

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