Need expert advice on corrupt Exchange 2010 transition, possible removal and reinstall
Setup: I have an existing 2 server exchange organization (2003 SP2 FE & Mailbox). I built/added 2 new Exchange 2010 SP1 servers (CAS/HT/Mailbox). All proper prerequisites were followed, including all AD related prerequisites. All went perfectly well. These were clean installs and nothing was changed/done with the Ex2010 configuration, with the exception of creating a CAS Array. After attempting to install Ex2010 SP2 on one of the servers, the upgrade failed and I now get a message when attempting to rerun the upgrade that the installation path is unavailable in the registry and that only disaster recovery mode is available. Exchange 2010 does not show up in Add/Remove Programs. The EMC or EM Shell will not launch.
As of now the Exchange 2003 environment continues to work normal and as far as I know the other Ex2010 server is still alright.
I need an expert to tell me what I need to do to correct this issue. Research is indicating that its going to take a clean reinstall of Server 2008 R2 and a reinstall of Exchange. I need specific steps with details because of the integration of AD and the existing Ex2003 org that it was introduced into. I do not want to mess up AD or the existing Ex2003 environment.
Answers/Advice please?
As of now the Exchange 2003 environment continues to work normal and as far as I know the other Ex2010 server is still alright.
I need an expert to tell me what I need to do to correct this issue. Research is indicating that its going to take a clean reinstall of Server 2008 R2 and a reinstall of Exchange. I need specific steps with details because of the integration of AD and the existing Ex2003 org that it was introduced into. I do not want to mess up AD or the existing Ex2003 environment.
Answers/Advice please?
ASKER
Yes, as noted all prerequisites were met, including enabling the "IIS 6 WMI Compatibility" Windows feature.
If I need to remove all instances without interfering with the 2nd Ex2010 box or any of it's AD related references, or without interfering with the Ex2003 servers, do i simply remove the corrupt Ex2010 server from the container using ADSIEDIT? How do I handle the references of public folder replication and the routing group connector that was made between 2003 and this corrupt 2010 server?
If I need to remove all instances without interfering with the 2nd Ex2010 box or any of it's AD related references, or without interfering with the Ex2003 servers, do i simply remove the corrupt Ex2010 server from the container using ADSIEDIT? How do I handle the references of public folder replication and the routing group connector that was made between 2003 and this corrupt 2010 server?
have you move the public folder replication from exchange 2K3 to this new exchange 2010 ? if yes then try to move the replication of public folder back to your e2k3. also move the mailbox back to ek3 if you have moved any from 2k3 to 2010. Also delete all test mailboxes.
Then try to run Setup.com /mode:Uninstall etc
this unistallation process will not effect your exiting e2k3 and after successful uninstall reboot your server. Prepare it for exchange 2010 SP2 and install it.
Then try to run Setup.com /mode:Uninstall etc
this unistallation process will not effect your exiting e2k3 and after successful uninstall reboot your server. Prepare it for exchange 2010 SP2 and install it.
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ASKER
Additional research and confirmation from Microsoft support confirmed steps needed to resolve this issue
So did you take care of these requirement ? Please have look at release note of exchange 2010 SP2
http://technet.microsoft.com/en-us/library/hh529928.aspx
or you can uninstall your exiting exchange 2010 and do a fresh setup of exchange SP2