I am trying to install Exchange 2010 typpicall Installation, but i get the followiing error, any one faced this issue? 

Do you have all pre-requisites installed for the Mailbox role? Is this the only mailbox server or is there another or was there another installed in this forest/domain prior to this one?

It was another MBX installed but same error, I removed from Control Panel, it was removed smoothly when I go to exchange organization via ADSI, I dont see that server anymore. I did another fresh install of OS 2008 R2 SP1, I installed all the perquisites, prepare schema / prepare AD, then latest updates, the system passed all prerequisites before trying to install, the installation goes fine until it reaches Mailbox Server role.

It was another MBX installed but same error, I removed from Control Panel, it was removed smoothly when I go to exchange organization via ADSI, I dont that server anymore. I did another fresh install of OS 2008 R2 SP1, I installed all the perquisites, prepare schema / prepare AD, then latest updates, the system passed all prerequisites before trying to install, the installation goes fine until it reaches Mailbox Server role.

If you no longer have any mailbox servers in your org and you are using the same domain as before, you need to check ADSI-Configuration context, go to CN=Databases,CN=Exchange Administrative Group (FYDIBOHF23SPDLT),CN=Administrative Groups,CN=<YourORG>,CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=domain,DC=com to see if there are any reminants of objects representing databases that do not exist any more. Delete these database objects if (and only if) you no longer have any mailbox servers in this exchange org. Do you have any errors in the application log related to the install?

Hi I find similar case about your issue. Maybe it will be helpful to you. http://social.technet.microsoft.com/Forums/en-US/exchangesvrmigration/thread/8a4423dd-d06e-4062-afe7-4976436bb7bf PS: You just post part of error. If it is convenient, can you post all error information ? TechNet Subscriber Supportin forum If you have any feedback on our support, please contact tngfb@microsoft.com Terence Yu TechNet Community Support

Hi Do you have anything update on your issue ?Terence Yu TechNet Community Support

Hi Do you have anything update on your issue ?Terence Yu TechNet Community Support

Hi, already exported one of the VM-DC, then prepared Testing Virtual Environment, I am providing the logs, so you can see the details in log file, http://sdrv.ms/TztMHz

Hi thanks for your update. I find error from your log. [08/13/2012 18:03:56.0188] [2] Process standard error: ERROR: Registry editing has been disabled by your administrator. Can you disable your group policy and run setup again ?Terence Yu TechNet Community Support

HI, Thank you very much for help, that was the main problem, it was configured in default domain policy, after resetting the policy to factory default, I was able to open regedit, and install exchange Mailbox Smoothly, Thanks in Advance