This is a wrap-up of an older post that had originally been published on my former website.
Even though that this post focusses on Exchange 2010 transport agents, you will get an understand on what is required to create an Exchange 2013/2016 aka Version 15 transport agent.
Writing your own transport agent for Exchange 2010 is not really complicated. With a Visual Studio C# Class project you are ready to go.
The follow picture shows the Visual Studio Solution as it has been used for the Message Modifier Solution.
Besides the C# class the solution contains the following Powershell script to simplify development and deployment:
The transport agent intercepts a message from a given sender address and performs the following actions:
// AttachmentModify // ---------------------------------------------------------- // Example for intercepting email messages in an Exchange 2010 transport queue // // The example intercepts messages sent from a configurable email address(es) // and checks the mail message for attachments have filename in to format // // WORKBOOK_{GUID} // // Changing the filename of the attachments makes it easier for the information worker // to identify the reports in the emails and in the file system as well. // Copyright (c) Thomas Stensitzki // ---------------------------------------------------------- using System; using System.Collections.Generic; using System.Diagnostics; using System.Globalization; using System.IO; using System.Reflection; using System.Text; using System.Text.RegularExpressions; using System.Threading; using System.Xml; // the lovely Exchange using Microsoft.Exchange.Data.Transport; using Microsoft.Exchange.Data.Transport.Smtp; using Microsoft.Exchange.Data.Transport.Email; using Microsoft.Exchange.Data.Transport.Routing; namespace SFTools.Messaging.AttachmentModify { #region Message Modifier Factory /// <summary> /// Message Modifier Factory /// </summary> public class MessageModifierFactory : RoutingAgentFactory { /// <summary> /// Instance of our transport agent configuration /// This is for a later implementation /// </summary> private MessageModifierConfig messageModifierConfig = new MessageModifierConfig(); /// <summary> /// Returns an instance of the agent /// </summary> /// <param name="server">The SMTP Server</param> /// <returns>The Transport Agent</returns> public override RoutingAgent CreateAgent(SmtpServer server) { return new MessageModifier(messageModifierConfig); } } #endregion #region Message Modifier Routing Agent /// <summary> /// The Message Modifier Routing Agent for modifying an email message /// </summary> public class MessageModifier : RoutingAgent { // The agent uses the fileLock object to synchronize access to the log file private object fileLock = new object(); /// <summary> /// The current MailItem the transport agent is handling /// </summary> private MailItem mailItem; /// <summary> /// This context to allow Exchange to continue processing a message /// </summary> private AgentAsyncContext agentAsyncContext; /// <summary> /// Transport agent configuration /// </summary> private MessageModifierConfig messageModifierConfig; /// <summary> /// Constructor for the MessageModifier class /// </summary> /// <param name="messageModifierConfig">Transport Agent configuration</param> public MessageModifier(MessageModifierConfig messageModifierConfig) { // Set configuration this.messageModifierConfig = messageModifierConfig; // Register an OnRoutedMessage event handler this.OnRoutedMessage += OnRoutedMessageHandler; } /// <summary> /// Event handler for OnRoutedMessage event /// </summary> /// <param name="source">Routed Message Event Source</param> /// <param name="args">Queued Message Event Arguments</param> void OnRoutedMessageHandler(RoutedMessageEventSource source, QueuedMessageEventArgs args) { lock (fileLock) { try { this.mailItem = args.MailItem; this.agentAsyncContext = this.GetAgentAsyncContext(); // Get the folder for accessing the config file string dllDir = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location); // Fetch the from address from the current mail item RoutingAddress fromAddress = this.mailItem.FromAddress; Boolean boWorkbookFound = false; // We just want to modifiy subjects when we modified an attachement first #region External Receive Connector Example // CHeck first, if the mail item does have a ReceiveConnectorName property first to prevent ugly things to happen if (mailItem.Properties.ContainsKey("Microsoft.Exchange.Transport.ReceiveConnectorName")) { // This is just an example, if you want to do something with a mail item which has been received via a named external receive connector if (mailItem.Properties["Microsoft.Exchange.Transport.ReceiveConnectorName"].ToString().ToLower() == "externalreceiveconnectorname") { // do something fancy with the email } } #endregion RoutingAddress catchAddress; // Check, if we have any email addresses configured to look for if (this.messageModifierConfig.AddressMap.Count > 0) { // Now lets check, if the sender address can be found in the dictionary if (this.messageModifierConfig.AddressMap.TryGetValue(fromAddress.ToString().ToLower(), out catchAddress)) { // Sender address found, now check if we have attachments to handle if (this.mailItem.Message.Attachments.Count != 0) { // Get all attachments AttachmentCollection attachments = this.mailItem.Message.Attachments; // Modify each attachment for (int count = 0; count < this.mailItem.Message.Attachments.Count; count++) { // Get attachment Attachment attachment = this.mailItem.Message.Attachments[count]; // We will only transform attachments which start with "WORKBOOK_" if (attachment.FileName.StartsWith("WORKBOOK_")) { // Create a new filename for the attachment // [MODIFIED SUBJECT]-[NUMBER].[FILEEXTENSION] String newFileName = MakeValidFileName(string.Format("{0}-{1}{2}", ModifiySubject(this.mailItem.Message.Subject.Trim()), count + 1, Path.GetExtension(attachment.FileName))); // Change the filename of the attachment this.mailItem.Message.Attachments[count].FileName = newFileName; // Yes we have changed the attachment. Therefore we want to change the subject as well. boWorkbookFound = true; } } // Have changed any attachments? if (boWorkbookFound) { // Then let's change the subject as well this.mailItem.Message.Subject = ModifiySubject(this.mailItem.Message.Subject); } } } } } catch (System.IO.IOException ex) { // oops Debug.WriteLine(ex.ToString()); this.agentAsyncContext.Complete(); } finally { // We are done this.agentAsyncContext.Complete(); } } // Return to pipeline return; } /// <summary> /// Build a new subject, if the first 10 chars of the original subject are a valid date. /// We muste transform the de-DE format dd.MM.yyyy to yyyyMMdd for better sortability in the email client. /// </summary> /// <param name="MessageSubject">The original subject string</param> /// <returns>The modified subject string, if modification was possible</returns> private static string ModifiySubject(string MessageSubject) { string newSubject = String.Empty; if (MessageSubject.Length >= 10) { string dateCheck = MessageSubject.Substring(0, 10); DateTime dt = new DateTime(); try { // Check if we can parse the datetime if (DateTime.TryParse(dateCheck, out dt)) { // lets fetch the subject starting at the 10th character string subjectRight = MessageSubject.Substring(10).Trim(); // build a new subject newSubject = string.Format("{0:yyyyMMdd} {1}", dt, subjectRight); } } finally { // do nothing } } return newSubject; } /// <summary> /// Replace invalid filename chars with an underscore /// </summary> /// <param name="name">The filename to be checked</param> /// <returns>The sanitized filename</returns> private static string MakeValidFileName(string name) { string invalidChars = Regex.Escape(new string(Path.GetInvalidFileNameChars())); string invalidRegExStr = string.Format(@"[{0}]+", invalidChars); return Regex.Replace(name, invalidRegExStr, "_"); } } #endregion #region Message Modifier Configuration /// <summary> /// Message Modifier Configuration class /// </summary> public class MessageModifierConfig { /// <summary> /// The name of the configuration file. /// </summary> private static readonly string configFileName = "SFTools.MessageModify.Config.xml"; /// <summary> /// Point out the directory with the configuration file (= assembly location) /// </summary> private string configDirectory; /// <summary> /// The filesystem watcher to monitor configuration file updates. /// </summary> private FileSystemWatcher configFileWatcher; /// <summary> /// The from address /// </summary> private Dictionary<string, RoutingAddress> addressMap; /// <summary> /// Whether reloading is ongoing /// </summary> private int reLoading = 0; /// <summary> /// The mapping between domain to catchall address. /// </summary> public Dictionary<string, RoutingAddress> AddressMap { get { return this.addressMap; } } /// <summary> /// Constructor /// </summary> public MessageModifierConfig() { // Setup a file system watcher to monitor the configuration file this.configDirectory = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location); this.configFileWatcher = new FileSystemWatcher(this.configDirectory); this.configFileWatcher.NotifyFilter = NotifyFilters.LastWrite; this.configFileWatcher.Filter = configFileName; this.configFileWatcher.Changed += new FileSystemEventHandler(this.OnChanged); // Create an initially empty map this.addressMap = new Dictionary<string, RoutingAddress>(); // Load the configuration this.Load(); // Now start monitoring this.configFileWatcher.EnableRaisingEvents = true; } /// <summary> /// Configuration changed handler. /// </summary> /// <param name="source">Event source.</param> /// <param name="e">Event arguments.</param> private void OnChanged(object source, FileSystemEventArgs e) { // Ignore if load ongoing if (Interlocked.CompareExchange(ref this.reLoading, 1, 0) != 0) { Trace.WriteLine("load ongoing: ignore"); return; } // (Re) Load the configuration this.Load(); // Reset the reload indicator this.reLoading = 0; } /// <summary> /// Load the configuration file. If any errors occur, does nothing. /// </summary> private void Load() { // Load the configuration XmlDocument doc = new XmlDocument(); bool docLoaded = false; string fileName = Path.Combine(this.configDirectory, MessageModifierConfig.configFileName); try { doc.Load(fileName); docLoaded = true; } catch (FileNotFoundException) { Trace.WriteLine("Configuration file not found: {0}", fileName); } catch (XmlException e) { Trace.WriteLine("XML error: {0}", e.Message); } catch (IOException e) { Trace.WriteLine("IO error: {0}", e.Message); } // If a failure occured, ignore and simply return if (!docLoaded || doc.FirstChild == null) { Trace.WriteLine("Configuration error: either no file or an XML error"); return; } // Create a dictionary to hold the mappings Dictionary<string, RoutingAddress> map = new Dictionary<string, RoutingAddress>(100); // Track whether there are invalid entries bool invalidEntries = false; // Validate all entries and load into a dictionary foreach (XmlNode node in doc.FirstChild.ChildNodes) { if (string.Compare(node.Name, "domain", true, CultureInfo.InvariantCulture) != 0) { continue; } XmlAttribute domain = node.Attributes["name"]; XmlAttribute address = node.Attributes["address"]; // Validate the data if (domain == null || address == null) { invalidEntries = true; Trace.WriteLine("Reject configuration due to an incomplete entry. (Either or both domain and address missing.)"); break; } if (!RoutingAddress.IsValidAddress(address.Value)) { invalidEntries = true; Trace.WriteLine(String.Format("Reject configuration due to an invalid address ({0}).", address)); break; } // Add the new entry string lowerDomain = domain.Value.ToLower(); map[lowerDomain] = new RoutingAddress(address.Value); Trace.WriteLine(String.Format("Added entry ({0} -> {1})", lowerDomain, address.Value)); } // If there are no invalid entries, swap in the map if (!invalidEntries) { Interlocked.Exchange<Dictionary<string, RoutingAddress>>(ref this.addressMap, map); Trace.WriteLine("Accepted configuration"); } } } #endregion }
I came across an interesting issue when setting up a new Exchange 2013 server in an Exchange organization having the cmdlet extension agent enabled.
As mentioned in my last post Exchange setup checks for the existence of the ScriptingAgentConfig.xml file when agent extenstion is enabled in the Exchange organization. It turned out that this ist not only true when you install an Exchange update using /mode:update, but as well when installing a new Exchange server using /mode:install.
The following error occurs when Exchange Management Tools are provisioned.
Configuring Microsoft Exchange Server Preparing Setup COMPLETED Stopping Services COMPLETED Copying Exchange Files COMPLETED Language Files COMPLETED Restoring Services COMPLETED Language Configuration COMPLETED Exchange Management Tools FAILED The following error was generated when "$error.Clear(); Set-WERRegistryMarkers; " was run: "Microsoft.Exchange.Provisioning.ProvisioningBrokerException: Provisioning layer initialization failed: '"Scripting Agent initialization failed: "File is not found: 'C:\Program File s\Microsoft\Exchange Server\V15\Bin\CmdletExtensionAgents\ScriptingAgentConfig.xml'.""' ---> Microso ft.Exchange.Provisioning.ProvisioningException: "Scripting Agent initialization failed: "File is not found: 'C:\Program Files\Microsoft\Exchange Server\V15\Bin\CmdletExtensionAgents\ScriptingAgentConf ig.xml'."" ---> System.IO.FileNotFoundException: "File is not found: 'C:\Program Files\Microsoft\Exc hange Server\V15\Bin\CmdletExtensionAgents\ScriptingAgentConfig.xml'." at Microsoft.Exchange.ProvisioningAgent.ScriptingAgentConfiguration.Initialize(String xmlConfigPa th) at Microsoft.Exchange.ProvisioningAgent.ScriptingAgentConfiguration..ctor(String xmlConfigPath) --- End of inner exception stack trace --- at Microsoft.Exchange.ProvisioningAgent.ScriptingAgentConfiguration..ctor(String xmlConfigPath) at Microsoft.Exchange.ProvisioningAgent.ScriptingAgentClassFactory.get_Configuration() at Microsoft.Exchange.ProvisioningAgent.ScriptingAgentClassFactory.GetSupportedCmdlets() at Microsoft.Exchange.Provisioning.ProvisioningBroker.BuildHandlerLookupTable(CmdletExtensionAgen t[] enabledAgents, Exception& ex) --- End of inner exception stack trace --- at Microsoft.Exchange.Provisioning.ProvisioningLayer.GetProvisioningHandlersImpl(Task task) at Microsoft.Exchange.Provisioning.ProvisioningLayer.GetProvisioningHandlers(Task task) at Microsoft.Exchange.Configuration.Tasks.Task.<BeginProcessing>b__4() at Microsoft.Exchange.Configuration.Tasks.Task.InvokeNonRetryableFunc(Action func, Boolean termin atePipelineIfFailed)".
As expected a fresh Exchange install contains the sample file only. The following screenshot shows the Exchange Management Shell and the releated folder in the background.
The only solution currently known to me is to disable the cmdlet extension agent until the setup of the new Exchange server has finished.
Disable-CmdletExtensionAgent "Scripting Agent"
Having the cmdlet extension agent disabled the setup finishes without any issues. Don't forget to copy the cmdlet extension Xml file to the newly built server and to enable the cmdlet extension agent again.
Enable-CmdletExtensionAgent "Scripting Agent"
You need assistance with your Exchange Server setup? You have questions about your Exchange Server infrastructure and going hybrid? You are interested in what Exchange Server 2016 has to offer for your environment?
Contact me at thomas@mcsmemail.de Follow at https://twitter.com/stensitzki
You are not able to list public folders in a co-existence scenario with Exchange Server 2007 and Exchange Server 2010/2013 using the Exchange 2007 EMS or EMC.
When you try to execute Get-PublicFolder you receive the following error:
Get-PublicFolder " There is no existing PublicFolder that matches the following Identity: '\'. Please make sure that you specified the correct PublicFolder Identity and that you have the necessary permissions to view PublicFolder.
This might happen after you have removed the first Exchange 2007 mailbox server, but not the last Exchange 2007 mailbox server.
Exchange Server 2007 uses the Exchange System Attendant to access the public folder store and fails, if the System Attendant discovery in Active Directory does not provide a proper configuration.
KB 2621350 describes the discovery process:
There two annoying things about these steps
The magic System Attendant mailbox has been removed from Exchange 2010. But the System Attendent configuration node does still exist in the Active Directory Configuration Partition for compatibility reasons. The configured attributes of the System Attendent entry vary depending on the version of the installed Exchange Server.
In regards of public folder issue, we need to focus on the following:
To fix the public folder access issue for Exchange Server 2007, set the homeMDB and homeMTA attributes. Set the Exchange System Attendant attributes to appropriate values for your Exchange servers.
Repeat steps 4 to 8 for each Exchange 2013 server in your environment.
Repeat steps 4 to 13 for each Exchange 2010 server in your environment.
Wait for Active Directory replication and retry to access the public folders using Get-PublicFolder in an Exchange Server 2007 Management Shell.
It might be required to restart the Exchange 2007 Information Store and System Attendant service of the Exchange 2007 server in question
Use an administrative PowerShell
Restart-Service MSExchangeIS Restart-Service MSExchangeSA
I haven’t noticed any issues in production environments so far. If you encounter any issues in your environment, feel free to leave a comment.
When you've enabled the Exchange scripting agent extension agents, it is required to copy the configuration file to each Exchange server. Paul Cunningham's script helps you to achive this goal pretty easily.
But if you have installed the Exchange 2013 Management Tools on additonal servers, these servers are not fetched using the Get-ExchangeServer cmdlet. But when you install a Cumulative Update the existence of the extension agent config file is checked. And this even on a server having only the Exchange Management Tools installed.
Therefore the following PowerShell code provides an easy and simple way to add additonal server having the Exchange 2013+ Management Tools installed (aka Admin Servers, Monitoring Servers, Job Servers, etc.). The script uses a filter to select Exchange 2013 servers only, as the script has been extended in an environment having still active Exchange 2007 servers.
The following PowerShell snippet displays only the changes, which need to be added to Paul's original script starting row 68.
# Original PowerShell code # $exchangeservers = Get-ExchangeServer # Select all Exchange 2013 servers only, restrict properties to Name and AdminDisplayName $exchangeservers = Get-ExchangeServer | ?{$_.AdminDisplayVersion -like "Version 15.0*"} | Select Name, AdminDisplayVersion # Add additional servers as needed $manualServers = @() # Copy and modify as needed $manualServers += (New-Object PSObject -Property @{Name="EXSRV2010";AdminDisplayVersion="Version 14"}) $manualServers += (New-Object PSObject -Property @{Name="EXSRV2013-01";AdminDisplayVersion="Version 15"}) $manualServers += (New-Object PSObject -Property @{Name="EXSRV2013-02";AdminDisplayVersion="Version 15"}) # Combine arrays $exchangeservers = $exchangeservers + $manualServers # End Modification $report = @() [string]$date = Get-Date -F yyyyMMdd-HHmmss
Enjoy extending the Exchange PowerShell cmdlets.
Questions? Just leave a comment.
The script sends a given number of test email to a configured SMTP host for test purposes (primarily Exchange queues, transport agents or anti-virus engines).
Do not forget to adjust script variables to suit your local Exchange infrastructure.
# EXAMPLE 1 # Send 10 normal emails .\Send-TestMail.ps1 -Normal -MessageCount 10 # EXAMPLE 2 # Send an Eicar test email .\Send-TestMail.ps1 -Eicar
When you encounter a situation where the transport queues are filling up or you just want to get messages out of a transport queue for further usage, you have to export the messages to the file system.
With Exchange 2007 you could easily utilize the Export-Message cmdlet to export suspended messages from a transport queue:
Get-Message -Queue MYSERVER\29489 | ?{$_.Status -eq "Suspended"} | Export-Message -Path D:\MessageExport
With Exchange Server 2010 or newer the Path attribute had been removed from the Export-Message cmdlet. The cmdlet now returns a binary object that needs to be assembled to a readable text message.
You can only export suspended messages, as the transport service might take precedence on non suspended messages. You can either suspend the queue or suspend single messages. The following example for Exchange Server 2010 or newer suspends the messages, but not the queue itself.
Identify the queue holding messages to be exported
Beispiel: Auflistung der Warteschlage auf Server MCMEP01
Get-Queue -Server MCMEP01 Identity DeliveryType Status MessageCount Velocity RiskLevel OutboundIPPool NextHopDomain -------- ------------ ------ ------------ -------- --------- -------------- ------------- MCMEP01\18 SmtpDeliv... Ready 0 0 Normal 0 MXEDB19 MCMEP01\23 SmtpDeliv... Ready 0 0 Normal 0 MXEDB08 MCMEP01\24 SmtpDeliv... Ready 0 0 Normal 0 MXEDB01 MCMEP01\25 SmartHost... Ready 3 0 Normal 0 [10.10.11.1] MCMEP01\53 SmtpDeliv... Ready 0 0 Normal 0 MXEDB03 MCMEP01\Submission Undefined Ready 512 0 Normal 0 Submission MCMEP01\Shadow\3 ShadowRed... Ready 2 0 Normal 0 MCMEP04.mcsmemail.de MCMEP01\Shadow\4 ShadowRed... Ready 2 0 Normal 0 MCMEP03.mcsmemail.de MCMEP01\Shadow\5 ShadowRed... Ready 3 0 Normal 0 MCMEP02.mcsmemail.de MCMEP01\Shadow\6 ShadowRed... Ready 2 0 Normal 0 MCMEP07.mcsmemail.de MCMEP01\Shadow\15 ShadowRed... Ready 1 0 Normal 0 MCMEP08.mcsmemail.de
Suspend all Messages in Queue MCMEP01\Submission
Get-Queue MCMEP01\Submission | Get-Message ResultSize Unlimited | Suspend-Message
Fetch all messages to an array and export all messages to the local file system. You can either export all messages by just enumerating the messages or by using the message subject as the file name. Using the message subject posed the risk that the subject might contain a character that is not allowed for file names.
$array = @(Get-Message -Queue MCMEP01\Submission -ResultSize Unlimited | ?{$_.Status -eq "Suspened"}) $array | ForEach-Object {$m++;Export-Message $_.Identity | AssembleMessage -Path ("E:\Export\"+$m+".eml")} $array | ForEach-Object {$m++;$filename="E:\Export\"+$m+"_"+$_.subject+".eml"; Export-Message $_.identity | AssembleMessage -path $filename}
The messages exported to the local file system can now be copied to the Exchange Transport Replay folder, which exists on each Exchange Server having an Exchange 2010 Hub Transport role or Exchange 2013/2016 Mailbox role.
After successful export of all suspended messages you want to delete the suspended messages from the queue. Ensure to use -WithNDR $false as otherwise all senders will receive a Non Delivery Report (NDR).
Get-Queue MCMEP01\Submission | Get-Message -ResultSize Unlimited | ?{$_.Status -eq "Suspened"} | Remove-Message -WithNDR $false
Messages saved to the Replay folder will be picked up the transport service. When a messages is picked up, the file extension changes to .TMP. You will not be able to delete a file at this point as the file is locked by the transport service. After a message file has been processed successfully, the file is deleted by the transport service. If there is any issue with the message file the file extension will change to .BAD.
You might encounter EventId 106 errors on Exchange 2013/2016 servers.
There are some article available on how to fix this issue on servers having a full installationof Exchange Server 2013/2016.
But you might encounter this error on servers having the Exchange 2013/2016 Management Tools installed only as well. In this case the solutions described will not work as expected.
Running the New-PerfCounters cmdlet requires the Microsoft.Exchange.Management.PowerShell.Setup PowerShell snapin. This PowerShell snapin cannot be loaded on servers having the Exchange Management Tools installed.
Add-PsSnapin : The Windows PowerShell snap-in 'Microsoft.Exchange.Management.PowerShell.Setup' is not installed on this computer. At line:1 char:1 + Add-PsSnapin Microsoft.Exchange.Management.PowerShell.Setup + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + CategoryInfo : InvalidArgument: (Microsoft.Excha...owerShell.Setup:String) [Add-PSSnapin], PSArgumentEx ception + FullyQualifiedErrorId : AddPSSnapInRead,Microsoft.PowerShell.Commands.AddPSSnapinCommand
The required code library is available on servers having the Exchange Management Tools installed. But the library is not added to the registry by default.
Registry of a server running Exchange Management Tools only:
Registry of a fully installed Exchange Server:
Just export the registry key Microsoft.Exchange.Management.PowerShell.Setup from an Exchange Server, fix Exchange file paths (if required) and import the regiytry file on the server having the Exchange Management Tools installed.
Example registry file:
Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\PowerShell\1\PowerShellSnapIns\Microsoft.Exchange.Management.PowerShell.Setup] "CustomPSSnapInType"="Microsoft.Exchange.Management.PowerShell.SetupPSSnapIn" "ApplicationBase"="D:\\Program Files\\Microsoft\\Exchange Server\\V15\\bin" "AssemblyName"="Microsoft.Exchange.PowerShell.Configuration, Version=15.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" "Description"="Setup Tasks for the Exchange Server" "ModuleName"="D:\\Program Files\\Microsoft\\Exchange Server\\V15\\bin\\Microsoft.Exchange.PowerShell.configuration.dll" "PowerShellVersion"="1.0" "Vendor"="Microsoft" "Version"="15.0.0.0"
After adding the registry key, you can successfully fix the performance counter issue.
Add-PsSnapin Microsoft.Exchange.Management.PowerShell.Setup New-PerfCounters -DefinitionFileName "$exinstall\setup\perf\WorkerTaskFrameworkPerfCounters.xml”