Trying to update a new CU6 installation to CU7 and I can't get past this error.  Please help.

Exchange Server component Mailbox role: Transport service failed.

Error: Error:

The following error was generated when "$error.Clear();

          $feVdirName = "PowerShell (Default Web Site)";

          $beVdirName = "PowerShell (Exchange Back End)";

          $vdirName = "PowerShell";

          $InternalPowerShellUrl="http://" + $RoleFqdnOrName + "/powershell";

          get-PowerShellVirtualDirectory -ShowMailboxVirtualDirectories -server $RoleFqdnOrName -DomainController $RoleDomainController | where { $_.Name -eq $beVdirName -or $_.Name -eq $feVdirName } | remove-PowerShellVirtualDirectory -DomainController $RoleDomainController;

          new-PowerShellVirtualDirectory $vdirName -Role Mailbox -DomainController $RoleDomainController -BasicAuthentication:$false -WindowsAuthentication:$true -RequireSSL:$true -WebSiteName "Exchange Back End" -Path ($RoleInstallPath + "ClientAccess\PowerShell-Proxy");

          new-PowerShellVirtualDirectory $vdirName -Role Mailbox -InternalUrl $InternalPowerShellUrl -DomainController $RoleDomainController -BasicAuthentication:$false -WindowsAuthentication:$false -RequireSSL:$false -WebSiteName "Default Web Site" -AppPoolId "MSExchangePowerShellFrontEndAppPool";

        " was run: "System.ArgumentException: The virtual directory 'PowerShell' already exists under 'NSCCEx13.administration.nashvilletech.int/Exchange Back End'.

Parameter name: VirtualDirectoryName

   at Microsoft.Exchange.Configuration.Tasks.Task.WriteError(Exception exception, ErrorCategory category, Object target, Boolean reThrow, String helpUrl)

   at Microsoft.Exchange.Configuration.Tasks.Task.WriteError(Exception exception, ErrorCategory category, Object target)

   at Microsoft.Exchange.Management.SystemConfigurationTasks.NewExchangeVirtualDirectory`1.InternalValidate()

   at Microsoft.Exchange.Configuration.Tasks.Task.<ProcessRecord>b__b()

   at Microsoft.Exchange.Configuration.Tasks.Task.InvokeRetryableFunc(String funcName, Action func, Boolean terminatePipelineIfFailed)".

Error:

The following error was generated when "$error.Clear();

          $feVdirName = "PowerShell (Default Web Site)";

          $beVdirName = "PowerShell (Exchange Back End)";

          $vdirName = "PowerShell";

          $InternalPowerShellUrl="http://" + $RoleFqdnOrName + "/powershell";

          get-PowerShellVirtualDirectory -ShowMailboxVirtualDirectories -server $RoleFqdnOrName -DomainController $RoleDomainController | where { $_.Name -eq $beVdirName -or $_.Name -eq $feVdirName } | remove-PowerShellVirtualDirectory -DomainController $RoleDomainController;

          new-PowerShellVirtualDirectory $vdirName -Role Mailbox -DomainController $RoleDomainController -BasicAuthentication:$false -WindowsAuthentication:$true -RequireSSL:$true -WebSiteName "Exchange Back End" -Path ($RoleInstallPath + "ClientAccess\PowerShell-Proxy");

          new-PowerShellVirtualDirectory $vdirName -Role Mailbox -InternalUrl $InternalPowerShellUrl -DomainController $RoleDomainController -BasicAuthentication:$false -WindowsAuthentication:$false -RequireSSL:$false -WebSiteName "Default Web Site" -AppPoolId "MSExchangePowerShellFrontEndAppPool";

        " was run: "System.ArgumentException: The virtual directory 'PowerShell' already exists under 'NSCCEx13.administration.nashvilletech.int/Default Web Site'.

Parameter name: VirtualDirectoryName

   at Microsoft.Exchange.Configuration.Tasks.Task.WriteError(Exception exception, ErrorCategory category, Object target, Boolean reThrow, String helpUrl)

   at Microsoft.Exchange.Configuration.Tasks.Task.WriteError(Exception exception, ErrorCategory category, Object target)

   at Microsoft.Exchange.Management.SystemConfigurationTasks.NewExchangeVirtualDirectory`1.InternalValidate()

   at Microsoft.Exchange.Configuration.Tasks.Task.<ProcessRecord>b__b()

   at Microsoft.Exchange.Configuration.Tasks.Task.InvokeRetryableFunc(String funcName, Action func, Boolean terminatePipelineIfFailed)".

Some progress....followed instructions to remove Powershell with ADSIEdit.... now I get this error.

Exchange Server component Mailbox role: Transport service failed.

Error: Error:

The following error was generated when "$error.Clear();

          $feVdirName = "PowerShell (Default Web Site)";

          $beVdirName = "PowerShell (Exchange Back End)";

          $vdirName = "PowerShell";

          $InternalPowerShellUrl="http://" + $RoleFqdnOrName + "/powershell";

          get-PowerShellVirtualDirectory -ShowMailboxVirtualDirectories -server $RoleFqdnOrName -DomainController $RoleDomainController | where { $_.Name -eq $beVdirName -or $_.Name -eq $feVdirName } | remove-PowerShellVirtualDirectory -DomainController $RoleDomainController;

          new-PowerShellVirtualDirectory $vdirName -Role Mailbox -DomainController $RoleDomainController -BasicAuthentication:$false -WindowsAuthentication:$true -RequireSSL:$true -WebSiteName "Exchange Back End" -Path ($RoleInstallPath + "ClientAccess\PowerShell-Proxy");

          new-PowerShellVirtualDirectory $vdirName -Role Mailbox -InternalUrl $InternalPowerShellUrl -DomainController $RoleDomainController -BasicAuthentication:$false -WindowsAuthentication:$false -RequireSSL:$false -WebSiteName "Default Web Site" -AppPoolId "MSExchangePowerShellFrontEndAppPool";

        " was run: "System.InvalidOperationException: An error occurred while creating the IIS virtual directory 'IIS://NSCCEx13.administration.nashvilletech.int/W3SVC/2/ROOT/PowerShell' on 'NSCCEX13'. ---> System.Runtime.InteropServices.COMException: Cannot create a file when that file already exists. (Exception from HRESULT: 0x800700B7)

   at System.DirectoryServices.Interop.UnsafeNativeMethods.IAdsContainer.Create(String className, String relativeName)

   at System.DirectoryServices.DirectoryEntries.Add(String name, String schemaClassName)

   at Microsoft.Exchange.Management.Metabase.IisUtility.CreateWebDirObject(String parent, String path, String vdirName)

   at Microsoft.Exchange.Management.Metabase.CreateVirtualDirectory.Execute()

   at Microsoft.Exchange.Management.SystemConfigurationTasks.NewExchangeVirtualDirectory`1.CreateToMetabase()

   at Microsoft.Exchange.Management.SystemConfigurationTasks.NewExchangeVirtualDirectory`1.InternalProcessRecord()

   --- End of inner exception stack trace ---

   at Microsoft.Exchange.Configuration.Tasks.Task.WriteError(Exception exception, ErrorCategory category, Object target, Boolean reThrow, String helpUrl)

   at Microsoft.Exchange.Configuration.Tasks.Task.WriteError(Exception exception, ErrorCategory category, Object target)

   at Microsoft.Exchange.Management.SystemConfigurationTasks.NewExchangeVirtualDirectory`1.InternalProcessRecord()

   at Microsoft.Exchange.Configuration.Tasks.Task.<ProcessRecord>b__b()

   at Microsoft.Exchange.Configuration.Tasks.Task.InvokeRetryableFunc(String funcName, Action func, Boolean terminatePipelineIfFailed)".

Still at this error while installing CU7 on 2013 in coexistence with 2007.

Any help, please?

Error:

The following error was generated when "$error.Clear();

          $feVdirName = "PowerShell (Default Web Site)";

$beVdirName = "PowerShell (Exchange Back End)";

          $vdirName = "PowerShell";

          $InternalPowerShellUrl="http://" + $RoleFqdnOrName + "/powershell";

          get-PowerShellVirtualDirectory -ShowMailboxVirtualDirectories -server $RoleFqdnOrName -DomainController $RoleDomainController | where { $_.Name -eq $beVdirName -or $_.Name -eq $feVdirName } | remove-PowerShellVirtualDirectory -DomainController $RoleDomainController;

          new-PowerShellVirtualDirectory $vdirName -Role Mailbox -DomainController $RoleDomainController -BasicAuthentication:$false -WindowsAuthentication:$true -RequireSSL:$true -WebSiteName "Exchange Back End" -Path ($RoleInstallPath + "ClientAccess\PowerShell-Proxy");

          new-PowerShellVirtualDirectory $vdirName -Role Mailbox -InternalUrl $InternalPowerShellUrl -DomainController $RoleDomainController -BasicAuthentication:$false -WindowsAuthentication:$false -RequireSSL:$false -WebSiteName "Default Web Site" -AppPoolId "MSExchangePowerShellFrontEndAppPool";

        " was run: "System.ArgumentException: The virtual directory 'PowerShell' already exists under 'NSCCEx13.administration.nashvilletech.int/Exchange Back End'.

Parameter name: VirtualDirectoryName

   at Microsoft.Exchange.Configuration.Tasks.Task.ThrowError(Exception exception, ErrorCategory errorCategory, Object target, String helpUrl)

   at Microsoft.Exchange.Configuration.Tasks.Task.WriteError(Exception exception, ErrorCategory category, Object target)

   at Microsoft.Exchange.Management.SystemConfigurationTasks.NewExchangeVirtualDirectory`1.InternalValidate()

   at Microsoft.Exchange.Configuration.Tasks.Task.<ProcessRecord>b__b()

   at Microsoft.Exchange.Configuration.Tasks.Task.InvokeRetryableFunc(String funcName, Action func, Boolean terminatePipelineIfFailed)".

Tried this multiple times
http://ucbeacon.blogspot.com/2014/04/exchange-2013-setup-error-virtual.html

Hi David,

I noticed that the error is related to an existing virtual directory 'PowerShell' in IIS. Please open IIS manager, delete PowerShell under the "Default Web Site" and then delete 'PowerShell' under the "Exchange Back End".

In ADSIEdit.msc, please navigate to the following path:

CN=Configuration,DC=domain,DC=com > CN=Services > CN=Microsoft Exchange > CN=Domain > CN=Administrative Groups > CN=Exchange Administrative Group > CN=Servers > CN=YOURSERVER > CN=Protocols > CN=HTTP.

Please delete CN=PowerShell (Exchange Back End) entry and CN=PowerShell (Default Web Site) entry. Then restart IIS service by running IISReset from a Command Prompt window. Check whether the issue persists.

Additionally, here is a similar thread for you:

https://social.technet.microsoft.com/Forums/office/en-US/32e06b5b-76bb-45d0-bf99-0b83c3182199/exchange-2013-cu2-upgrade-to-cu3-failed-at-front-end-transport-service?forum=exchangesvrdeploy

Regards,