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  • Blog Post: Async MAPI Notifications in Exchange are a problem for MAPI clients that impersonate

    I had a case six months ago where the customer was using Exchange’s MAPI against Exchange 2013 and was seeing a number of MAPI_E_NETWORK_ERRORs in his application. After discussing the issue with him it was determined that the application was running in the security context of Local System but...
  • Blog Post: Exchange's MAPI repeatedly prompts for credentials

    I had a case recently where the customer's symptoms where that his application was causing a security credential dialog over and over again even though correct credentials were supplied. Upon further investigation we found that the LmCompatabilityLevel registry value was set to 1.  Since the application...
  • Blog Post: EXHTTP settings don't appear in Exchange 2013's Autodiscover response

    MAPI clients wishing to get the correct Autodiscover settings for Exchange 2013 need to get the EXHTTP nodes in the Autodiscover response to configure the client correctly. However, the Plain Old XML (POX) Autodiscover will not return this information if the client is not above a certain version of Outlook...
  • Blog Post: How to create an Outlook profile for Office 365

    I had another case involving creating a profile to an Office 365 mailbox. However, this time it was for Outlook’s MAPI, not Exchange's MAPI as previously documented. After discussing this with the Outlook product team they agreed to document the minimum number of properties to create a profile...
  • Blog Post: How to configure an Outlook profile using MFCMAPI for Exchange 2013

    I had another case involving creating a profile to an Exchange 2013 server.  However, this time it was for Outlook’s MAPI, not Exchange’s MAPI as previously documented.  After discussing this with the Outlook product team they agreed to document the minimum number of properties to create a...
  • Blog Post: 9646 still seen on Exchange 2013 even after applying "View Information store status"

    Of course if you have a MAPI application you are most likely familiar with the 9646 errors. Event Type: Error Event Source: MSExchangeIS Event Category: General Event ID: 9646 Description: Mapi session "/o=ExchangeOrg/ou=First Administrative Group/cn=Recipients/cn=User" exceeded the maximum of 32...
  • Blog Post: How to use MFCMAPI to create a MAPI profile to connect to Office 365

    I helped in a case recently where the customer needed to use Exchange’s MAPI to connect to Office 365. Now that Exchange’s MAPI supports RPC over HTTP (ROH) this is possible. I used my other post on connecting to Exchange 2013 as a base template and then just changed some things to connect...
  • Blog Post: How to use MFCMAPI to create a MAPI profile to connect to Exchange 2013

    Well it's finally released.  The long awaited MAPI/CDO download that includes the documentation which outlines how to connect to Exchange 2013.  As a supplement to that I have created this blog post to walk you through the steps of creating a profile using MFCMAPI to troubleshoot issues. ...
  • Blog Post: Recovery Databases (RDB) are listed in the Exchange Writer Metadata in Exchange 2013 RTM

    The Exchange Writer for Exchange 2013 will list Recovery Databases (RDB) in it's writer metadata. These should be ignored. This is a known issue in Exchange 2013 RTM. This issue is addressed in the next update to Exchange 2013.
  • Blog Post: How to install Transport Agents in Front End Transport (FET) in Exchange 2013

    This is already documented in the release notes but I wanted to call out that in Exchange 2013 you must use local powershell to run the cmdlets to install transport agents in Front End Transport (FET). This is because when a remote session is used the cmdlet is executed on the backend server. When you...
  • Blog Post: Agent went async but did not call Resume (Event Id 1057)

    In Exchange 2013 you may see the following in the event log if you don't call resume in your asynchronous agent Log Name: Application Source: MSExchange Extensibility Event ID: 1057 Task Category: MExRuntime Level: Error Keywords: Classic User: N/A Description: Agent 'Smith' went async but did not...
  • Blog Post: Coexistence with Exchange 2013

    If you are on Exchange 2010 you will need SP3 to coexist with Exchange 2013. Exchange 2010 SP3 was released yesterday. http://blogs.technet.com/b/exchange/archive/2013/02/12/released-exchange-server-2010-sp3.aspx If you are still on Exchange 2007 you can install RU 10 and coexist with 2013....
  • Blog Post: VSTO based Custom Task Panes (CTP) may cause memory leak in Outlook

    I have been wanting to post this for awhile but never got around to it. I have only seen two cases of this so I guess my procrastination is justified. If you are using Visual Studio Tools for Office 3.0 you may experience a memory leak when using Custom Task Panes (CTP) within Outlook. There are two...
  • Blog Post: Recovering Personal Archive Mailboxes from a Recovery Database

    Personal archive mailboxes are new in Exchange 2010. They are designed to be a replacement for personal PSTs. They are better for Administrators who need to manage end users' personal repositories for email while at the same time ensure compliance and retention polices. The issue happens when an administrator...
  • Blog Post: Where or where has my Where-Object gone?

    If you have done any remote runspace creation against Exchange 2010 you have undoubtly run into this error message: "Script block literals are not allowed in restricted language mode or a Data section" or "The term 'Where-Object' is not recoginized as the name of a cmdlet, function, script file...
  • Blog Post: How to use the Microsoft Exchange Troubleshooting Assistant (ExTra) to troubleshoot RPC Client Access issues

    I often ask customers to use ExTra to troubleshoot RPC Client Access issues. Rather then write this over and over again, here are the steps for using ExTra to troubleshoot a RPC Client Access issue. On the CAS Server that the MAPI client is connecting to run the following at the command prompt...
  • Blog Post: It's a dirty job but someone has to do it

    Well here is just more of the same, Stephen posted about querying an item to see whether it's "dirty" or not . Here is the .NET equivalent. I didn't actually test these this time so your feedback is welcome. Visual Basic Public Function IsItemDirty( ByVal itm As Object ) As Boolean Dim typeDispatch...
  • Blog Post: Now you see me, now you don't

    My colleague Stephen Griffin recently blogged about how to show or hide the Sender Contact Photo feature in Outlook . Since he only supplied the C++ version the product team asked me to supply the .NET version. [Edit: 2/10/2014: It has come to my attention that the code below will only work for Outlook...
  • Blog Post: Managing Outlook Security Settings

    I got a question today about if one could set the Outlook Security Settings programmatically instead of requiring the user to go through the dialog in the Outlook UI. The answer is Yes, and the article below describes how to do it: How to Assign an S/MIME Certificate to a MAPI Profile for Use with...
  • Blog Post: Attention all managed debuggers - PSSCOR2 has been released!

    PSSCOR2 has been released to the public! I have been using this tool for years and I cannot describe what my job would be without it. If you are using Windbg to analyze hang and crashes in managed code, then this tool is for you. Check out Tom's post below: http://blogs.msdn.com/tom/archive/2010/03...
  • Blog Post: Local Runspaces are not supported in Exchange 2010

    First, let's define what a Local Runspace is and how that differs from the one you would use for Exchange 2010. A Local Runspace is a runspace configured to load the local Exchange Powershell snapin via the RunspaceConfiguration object. This was the standard type of Runspace created when automating Powershell...
  • Blog Post: How to use Windows Authentication with the PSCredential class

    Since posting the Remote Powershell sample I have had many people ask me how to make a connection to a remote endpoint using Windows Authentication instead of suppling a username and password as my sample demonstrates. I have changed the sample so that it looks for the presence of a username and password...
  • Blog Post: The best subject of an email that I ever saw

    From: XXXXXXXXXXXXXXXXX To: xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx Subject: Daylight saving timezone - is there any known issues? Ah yes, Daylight Savings and Timezones. The most straight forward construct known to man. Well the one reader of my blog (thanks Mom) may not get why this is so...
  • Blog Post: How to configure a HTTP endpoint for Exchange Web Services in Exchange 2010

    In Exchange 2007 if you wanted to enable HTTP for Exchange Web Services all you had to do was go into Internet Information Services (IIS) and uncheck the box 'Require secure channel (SSL)' on the EWS virtual directory. In Exchange 2010 RTM this is no longer possible. IIS still gives you this option;...
  • Blog Post: Exchange 2010 RU 1 has been released

    http://www.microsoft.com/downloads/details.aspx?FamilyID=371add31-d7a0-4c8b-8325-a6fced2d05e6&displaylang=en Along with a new version of the MAPI download: http://www.microsoft.com/downloads/details.aspx?familyid=e17e7f31-079a-43a9-bff2-0a110307611e&displaylang=en Once the new MAPI download...
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