I was running through the Exchange 2010 installation process earlier today, during the installation process, everything went really smoothly and I only had “green ticks”!

Once done, I opened the Exchange Management Console and saw the following error:

‘The following error occurred when searching for On-Premises Exchange server:[myservername.local] Processing data from remote server failed with the following error message: The user "domain\username" isn't assigned to any management roles. For more.... It was running "Discover-ExchangeServer - USeWIA $true -SupressError $true’

It was rather confusing at first as I had completed the installation using an admin account that was a member of the Enterprise Admins group. Digging a little deeper, saw the following error in the event log:

After some further digging, I realised what had happened. A colleague of mine did the AD schema preparation using his admin account a few days ago, during that part of the process, the account being used was automatically added to the “Organization Management” AD security group. When I then resumed the installation process with my account, I was not a member of this group. To rectify the problem, I had to manually add my account to the “Organization Management” AD security group.