Outlook 2007 AddStore() Collapses Other PSTs

Question

Our team has written an add-in for Outlook 2007 using VSTO. In the add-in, we create PSTs and call Namespace.AddStore() to add the new PSTs to the store. We have noticed that, when this is done, some of the other PSTs which have their folders expanded are collapsed when AddStore() is called. This is undesireable behavior.

This issue also exists in Outlook 2010; however, applying the hotfix described in Knowledgebase Article 2598318 (http://support.microsoft.com/kb/2598318) resolves the issue for Outlook 2010. In fact, the article specifically calls this issue out:

"After you use a macro that contains the AddStore method to add a .pst file to Outlook 2010, other .pst files that are expanded in Outlook 2010 collapse."

I am looking for a resolution for Outlook 2007. Upgrading to Outlook 2010 is not an option.

Answer 1

For those interested, this issue was fixed by Microsoft and available in the Outlook 2007 hotfix package dated February 12, 2013. See support.microsoft.com/kb/2760822 for more information.