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So what did you say you do here again?
29 September 09 08:29 AM | dvespa | 0 Comments   
I was recently asked the following questions regarding my blog and it's purpose. I decided that it would be good to post them here so my reader can understand the motivation of this blog. 1. Have you defined a purpose or strategy for your blog? If so, Read More...
Creating Security Label Policy Modules
04 December 08 09:03 AM | dvespa | 0 Comments   
It seems that every so often I will see a request come in for assistance with creating a Security Label Policy. Apparently the documentation on MSDN is not sufficient. You can find the article here: http://msdn.microsoft.com/en-us/library/aa140148.aspx Read More...
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COM Interop Advances in .NET 4.0
04 November 08 07:48 PM | dvespa | 1 Comments   
Misha has some great content about the advances in COM Interop in .NET 4.0. Check it out: http://blogs.msdn.com/mshneer/archive/2008/10/28/better-eventing-support-in-clr-4-0-using-nopia-support.aspx Also, 4 videos that describe how it all works: http://blogs.msdn.com/mshneer/archive/2008/10/29/face-made-for-emails.asp Read More...
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Troubleshooting Outlook COM Addins – Using Instrumentation
03 November 08 07:15 AM | dvespa | 1 Comments   
At this point, you should have done the following: Confirmed that COM can create your Addin using VBScript Confirmed that Outlook is finding your Addin's registration and that the Addin is properly registered with COM Confirmed that Outlook is loading Read More...
Who disconnected my RPC!?
27 October 08 04:59 PM | dvespa | 0 Comments   
Ryan Gregg has a post out there that is worth a read for anyone who is automating Outlook out of process. Here is the post : http://blogs.msdn.com/rgregg/archive/2008/10/27/application-shutdown-changes-in-outlook-2007-service-pack-2-beta.aspx Read More...
Desktop Heap (To Outlook): I am exhausted!
22 October 08 03:58 PM | dvespa | 1 Comments   
I recently worked on an issue where the customer was getting this error message when attempting to export items from his Calendar to a PST: “The add-in ‘<DLL Path>’ could not be installed or loaded.  This problem may be resolved by using Detect Read More...
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Troubleshooting Outlook COM Addins – Using Process Explorer
22 October 08 03:55 PM | dvespa | 0 Comments   
Process Explorer is another tool in my arsenal when troubleshooting a COM Addin loading problem.  Often times developers will think that their Addin is not loading, when in fact it is.  The problem is that the Addin is not behaving as expected Read More...
Troubleshooting Outlook COM Addins – Using ProcMon
15 October 08 09:12 AM | dvespa | 0 Comments   
As I explained in my first post, Office uses the ProgId found in the office specific Addin registry (\Software\Microsoft\Office\Outlook\Addins\) to activate the COM component.  Calling CoCreateInstance kicks off a series of COM calls which you can Read More...
Troubleshooting Outlook COM Addins – Using VBScript
03 October 08 08:15 AM | dvespa | 0 Comments   
Since Office uses COM to create Addins and _IDTExtensibility2 inherits from IDispatch it is available to scripting clients, a common technique I use to troubleshoot COM Addins are to see if I can create the component manually via a vbscript. Use the following Read More...
Troubleshooting Outlook COM Addins - Introduction
30 September 08 11:46 AM | dvespa | 1 Comments   
I have decided to start a series called ‘Troubleshooting Outlook COM Addins’. I want to outline tips and tricks to finding the root cause of COM Addin issues. Mainly, why the Addin doesn’t load. I would say that this is the biggest call generator for Read More...
Why doesn't my Exchange Client Extension load on Windows Vista
14 March 08 07:21 PM | dvespa | 0 Comments   
We had several cases lately where customers are asking this very question. The answer is basically User Account Control (UAC) . If a user is using Vista with UAC enabled Outlook is running with medium Integrity Level (IL). When a process runs with medium Read More...
MAPI Forms don't launch when dowloaded from the Exchange Org Form Lib on Windows Vista
19 July 07 10:59 AM | dvespa | 0 Comments   
After working this issue for just about six months I am finally at the stage where I can blog about this. Windows Vista changed the COM Activation model to prevent activiation of COM components registered in HKEY_CURRENT_USER when the COM client is running Read More...
VSTO 2005 Addin does not load in Outlook 2003 if UAC is disabled
07 June 07 10:33 PM | dvespa | 0 Comments   
Windows Vista changes the COM Activation model and will no longer create components registered in HKEY_CURRENT_USER (HKCU) if the client application is running with a Integrity Level (IL) of higher than medium. So when UAC is disabled, Outlook will run Read More...
MSPST and Session 0 Isolation don't mix
07 June 07 10:01 PM | dvespa | 0 Comments   
I had a case recently where a customer was using the Microsoft Personal Storage Provider (MSPST) in a service. Everything was working fine until they moved to Windows Vista, the kernel objects MSPST uses (mutants, file mappings, etc) to allow two processes Read More...

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