Thursday, January 15, 2009

Outlook 2003 addin having issues?

If you're outlook 2003 addin is failing and outlook is only telling you that your plugin was disabled since it encountered an error, you can obtain the exception by starting outlook like this from the command line:

> set VSTO_SUPPRESSDISPLAYALERTS=0
> C:\Program Files\Microsoft Office\OFFICE11\OUTLOOK.EXE


The familiar debugging box should then pop up telling you why your addin failed. If it doesn't pop up make sure that the value for the registry key at HKEY_CURRENT_USER\Software\Microsoft\Office\Outlook\Addins\YourAddInName\LoadBehavior = 3

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