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exchange 2010 installation

sandyferdinando used Ask the Experts™
i am trying to install exchange 2010 in to my w2k3 AD environment. when it does the pre req it failed with following error

The Exchange organization is not in native mode.
Recommended Action: http://go.microsoft.com/fwlink/?linkid=30939&l=en&v=ExBPA.4&id=63bbe074-5dae-41b4-b71b-80ffb0b1d42b

as fas as i know we never installed exchange previously after looking the los it foiund Atest exchange organisation unit in AD .
it looks like some one has tried to install previously or attributes got installed.

can you help to remove these AD atributes . i am bit scared to remove from AD using adsiedit.

help !!!
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Awarded 2009
Top Expert 2010
You only have 1 exchange organisation in AD so you need to check your existing one is in native mode as per: http://support.microsoft.com/?kbid=272314

If you have never installed Exchange and you are absolutely sure of this then using ADSIEdit expand Configuration > Services > Microsoft Exchange and check to see I there are any exchange organisation listed.

If so please report back with what they are.
Awarded 2009
Top Expert 2010

@R--R > don't you think we might need to find out which version of Exchange it is before giving advice for the wrong version?

Most of what you have just posted assumes that Exchange is available for uninstall!!


exported list from adsiedit

and dont know which version has installed
Name      Class      Distinguished Name
CN=Active Directory Connections      container      CN=Active Directory Connections,CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=sandykool,DC=com
CN=Sportscover-Dev      msExchOrganizationContainer      CN=Sportscover-Dev,CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=sandykool,DC=com

Awarded 2009
Top Expert 2010

If you are absolutely sure you don't have exchange installed just delete the container called Sportscover-dev
If you do not want to delete the Container Called Sportscover-dev,
Then Right Click on Sportscover-dev -> Properties.
Check for an attribute called msExchMixedMode.
Change it to False.
Then continue with the Installation.
Awarded 2009
Top Expert 2010

If there is no Exchange in use then leaving that container will cause further problems down the line.  It's better to remove it now.
if at all you are planning to remove it i would say remove th "microsoft exchange container"
if you have palns to continue with exchage 2010 and not earlier versions (which you never had)