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Exchange 2010 setup process fails if you try to install Exchange Server 2010 into a domain that has an underscore character ( _ ) in the domain name


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Symptoms

If you try to install Exchange Server 2010 in a domain that has an underscore character ( _ ) in the domain name, the installation may fail on a pre-request rule. However, in this scenario, the Exchange Server 2003 installation can be successful.

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More information

This failure occurs because the Exchange 2010 Setup program creates a self-signed x.509 certificate for the server whose FQDN includes an underscore character ( _ ). However, X.509 rules indicate that the underscore character ( _ ) is not valid in X.509 certificate. The setup failure occurs in the Tlscertificateinfo.cs file, which throws the following argument exception:
(Microsoft.Exchange.Net.NetException.InvalidFQDN(name), "subjectAlternativeNames")
This failure occurs because the installation program does not find any valid DNS names in the Subject Alternative Name field of the self-signed x.509 certificate.

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Status

This behavior is by design.

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More information

For more information about how to enable the verbose logging, click the following article number to view the article in the Microsoft Knowledge Base:
330461� How to troubleshoot Server ActiveSync

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Keywords: KB975104, kbexpertiseinter, kbinfo, kbsurveynew

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Article Info
Article ID : 975104
Revision : 3
Created on : 9/2/2009
Published on : 9/2/2009
Exists online : False
Views : 514