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An existing Essentials installation has been detected in this domain

Posted on 2011-02-28
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Last Modified: 2012-05-11
Attempting to install SCE 2010 and I am getting setup wizard message:
An existing Essentials installation has been detected in this domain. Only one Essential server is permitted in a domain per the licensing agreement.
I think the previous tech installed a trial version and never uninstalled it. I know the name of the test server that is in Active Directory. If I delete the name from AD will this do the trick ?

thanks for your help.
cj
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Question by:cslinger
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DrUltima earned 500 total points
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Yes and no.  I would try deleting the server from AD first, but I have a hunch it won't help.  This is because Essentials changes your AD a little when it is installed.  I found these instructions from a TechNet blog on manual removal of a failed Essentials installation:

1. On the Domain Controller, open ADSI Edit (Start – Run – Adsiedit.msc).

2. Right click on the “Domain” tree and select New – Query.

3. In the New Query window, enter the following:
Name: SCESCP Query
Root of Search: <domain name>
Query String: (&(objectCategory=serviceConnectionPoint)(cn=SCESCP))

4. Click on OK.

5. Expand the Domain node in ADSI Edit and select the “SCESCP Query” node.

6. A “CN=SCESCP” object should be listed in the right-hand pane, with a distinguished name of “CN=SCESCP,CN=<ComputerName>,CN=<OUName>,DC=<DomainName>,DC=com”. This tells us which computer account has the SCESCP.

7. After confirming that System Center Essentials is not being used on this server, delete the SCESCP object from the “SCESCP Query” node in ADSI Edit.

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DrUltima
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