Hello, i am currently trying to update our exchange environment from 2010 to 2013 and attempting to install our first 2013 mailbox role. All our existing exchange servers are 2010 sp3 update roll up 5 and i am using exchange 2013 cu8 for the 2013 install.

I have completed all the prerequisites sucessfully i.e prepareschema preparead and preparealldomains. Exchange 2010 is currently installed in a child domainI monitored the forest replication status for any issues after each command and had no problems.

I have checked the various ADSI attributes to confirm the appropriate changes.

The problem i having each time i run the setup the prereq check fails with the following error

The local domain needs to be prepared using Setup PrepareDomain before server roles can be installed

and the error below appears in the setup logs

Failed Rule Domain PrepRequired Message The local domain needs to be prepared using Setup PrepareDomain before server roles can be installed.

But like i say this has definitely been done.

Additionally if i run the setup in the root domain the prereqs pass and it would allow me to install exchange.

Does anyone have any idea what the setup is actually checking for? or any ideas how to get past it or what exactly might be going on?

Thanks

• Edited by _CRK_ 23 hours 23 minutes ago

Hi _CRK_

Could you please double check and confirm you've completed all of these steps?

https://technet.microsoft.com/en-us/library/bb125224(v=exchg.150).aspx

Specifically this step:

When you're ready, do the following to prepare all of the domains in your Active Directory forest for Exchange.

1. Open a Windows Command Prompt window and go to where you downloaded the Exchange installation files.

2. Run the following command:

Setup.exe /PrepareAllDomains /IAcceptExchangeServerLicenseTerms

Hi Zach, i can confirm i have completed all the steps in the article

https://technet.microsoft.com/en-us/library/bb125224(v=exchg.150).aspx

I have also run the /PrepareAllDomains command and it hasn't rectified.

Thanks

Hi CRK,

Thank you for your question.

First of all, we make sure the administrator have enough permission to install Exchange, use the domain\administrator to check if the issue persist. If you have used domain\administrator, we could delete administrator window profile by the following link to check if the issue persist:

https://technet.microsoft.com/en-us/library/cc775638%28v=ws.10%29.aspx

Then we should prepare AD schema in root domain, prepareAD and  preparedomain in child domain. Run set L in cmd to check if the server connect to the specific DC which belong to child domain DC. Then make sure replication in child domain without any problems.

If there are any questions regarding this issue, please be free to let me know.

Best Regard,

Jim