Can anybody confirm if Exchange 2013 supports uninstallation of specific roles, i have tried running: "Setup /Mode:Uninstall /Roles:ClientAccess /IAcceptExchangeServerLicenseTerms" however that returns the following error: " Welcome to Microsoft Exchange Server 2013 Unattended Setup The parameter 'roles' is not valid for current operation 'Uninstall'. Setup checks failed: Invalid command line arguments. Please type 'setup.exe /help' for more information. " Despite "setup /help:uninstall" listing the following as an example: " Exchange Server Installation Usage: Setup /Mode:Install /Roles:<roles to install> [<OptionalParameters>] /IAcceptExchangeServerLicenseTerms Setup /Mode:Uninstall /Roles:<roles to uninstall> /IAcceptExchangeServerLicenseTerms Setup /Mode:Upgrade /IAcceptExchangeServerLicenseTerms " These two statements seem to dispute each other.

Actually this is a know issue, it's in the Release Notes http://technet.microsoft.com/en-us/library/jj150489(v=exchg.150).aspx "The Setup command line help indicates that you can use the Roles parameter when you uninstall Exchange 2013 using the Uninstall Setup mode. This is incorrect. The Roles parameter isnt supported when using the Uninstall Setup mode. When you uninstall Exchange 2013, all server roles are uninstalled from the computer. Uninstalling individual roles isnt supported."Did my post help? Please use "Vote As Helpful", "Mark as answer" or "Propose as answer". Thank you!

So how are we supposed to uninstall the client access role? I no longer want clients accessing the mailbox server directly.

So how are we supposed to uninstall the client access role? I no longer want clients accessing the mailbox server directly. You can't remove a single role, the workaround is to remove Exchange 2013 and then reinstall the Mailbox role. This of course doesn't work if this is your only server.Did my post help? Please use "Vote As Helpful", "Mark as answer" or "Propose as answer". Thank you!

Great..