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"Length of the property is too long" error when you try to set up a hybrid deployment

You try to use the Hybrid Configuration Wizard or the Set-HybridConfiguration Exchange Management Shell cmdlet to set up a hybrid deployment. This hybrid deployment is for your on-premises Microsoft Exchange Server 2013 or Microsoft Exchange 2010 environment and Microsoft Exchange Online in Office 365. However, you receive an error message that states that the value of the TlsCertificateName parameter exceeds the maximum limit of 256 characters. The error message resembles the following:
The length of the property is too long. The maximum length is 256 and the length of the value provided is <Number>.
This issue occurs if the value of the rangeUpper attribute for the TlsCertificateName parameter contains more than 256 characters. Certificate names can't have more than 256 characters.
Do one of the following.

If you're running Exchange 2013

  1. Install the latest cumulative update for Exchange Server 2013. To download the latest cumulative update, go to Updates for Exchange 2013.
  2. Run the latest version of the Hybrid Configuration wizard. To download the latest Hybrid Configuration wizard, go to
For more information about the benefits of the latest Hybrid Configuration wizard, see Introducing the Microsoft Office 365 Hybrid Configuration Wizard.

If you're running Exchange 2010

Use a certificate from a third-party certification authority (CA) with a certificate name that has fewer than 256 characters.
Still need help? Go to the Office 365 Community website or the Exchange TechNet Forums.

Article ID: 2860844 - Last Review: 11/25/2015 18:38:00 - Revision: 8.0

  • Microsoft Exchange Online
  • Microsoft Exchange Server 2013 Enterprise
  • Microsoft Exchange Server 2013 Standard
  • Microsoft Exchange Server 2010 Enterprise
  • Microsoft Exchange Server 2010 Standard
  • o365e o365m o365022013 o365 o365a hybrid kbbug kbfix KB2860844