The following error occurred while executing the "$ Error.Clear ()

Please help me

I met this error message by reinstalling Exchange 2013 SP1

Exchange Server Configuration

    Preparing to install ENDED
    Stop ENDED services
    Copying files Exchange ENDED
    Language files ENDED
    Restoring ENDED services
    Language setup ENDED
    Exchange management tools ENDED
    Component 1 of the Mailbox role FAILURE
     The following error occurred while executing the "$ Error.Clear ();
          $ VdirName = "PowerShell";
          $ InternalPowerShellUrl = "http: //" + $ RoleFqdnOrName + "/ powershell";
          New PowerShellVirtualDirectory $ vdirName -Role Mailbox -InternalUrl $ InternalPowerShellUrl $ -DomainController
RoleDomainController -BasicAuthentication: $ false -WindowsAuthentication: $ false -RequireSSL: $ false -WebSiteName "Default
Website "-AppPoolId" MSExchangePowerShellFrontEndAppPool ";
          New PowerShellVirtualDirectory $ vdirName -Role Mailbox -DomainController $ RoleDomainController -BasicAuthentic
ation: $ false -WindowsAuthentication: $ true -RequireSSL: $ true -WebSiteName "Exchange Back End" -Path ($ RoleInstallPath + "
ClientAccess \ PowerShell-Proxy ");
        "" The virtual directory "PowerShell" already exists under "SRV-DOTTA01.dotta.local / Default Web Site."
Parameter name: VirtualDirectoryName ".

Best regards,

Michael

---

Michael Phan