Cannot Rename Computer Name or Un-join Computer – Certificate Services 2012

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Introduction:

Careful consideration should be made before installing Certificate Services on the Windows Server 2012. A proper CA hierarchy should be design along with Naming standards, CA names cannot be more than 64 characters in length. Naming convention rules which applied to Server 2008 R2 still holds good for Server 2012 such as

 

Considerations:

a) Names cannot contain special characters

b) Chinese / Arabic … supports 37 character long

c) Server Name becomes the Common Name for CA .

d) CN of the certificate should not be configured with FQDN

e) After installation of Certificate Services on Server 2012, Administrators cannot change the Server name or Unjoin the computer from domain. the only way to change the server name / unjoin from domain is to uninstall the Certificate Services.

To Un-join / Change Computer Name:

1) On CA Server  Navigate to Server Manager

2) Click Manage option located at top right corner of Server Manager , select Remove Roles and Features

3) Select CA Server from Server Pool and on Server Roles window, Uncheck Active Directory Certificate Service and click Remove Features

4) Restart the CA Server and administrators now will be able to Rename and Un-join activities.

 

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Twitter: shaun.hardneck

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About Me ? I Guess i would start by saying i am a family guys and full time SysAdmin and Tech Junky. This Blog is my first attempt to share information about daily issues i come across as a SysAdmin as well as some new deployments i am part of. Topics that i will cover will mostly be about Office 365,Windows,Exchange as well as Active Directory. I hope some of my Blog posts helps someone #LiveLongAndBeLazy #Exchange #Office 365 #ActiveDirectory #Hyper-V
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