GetFolder sometimes returns an incorrect TotalCount when issued against a Public Folder mailbox hosted in Office 365 No ratings yet.

Symptoms When issuing an Exchange Web Services GetFolder request to a public folder mailbox hosted in Office 365 Exchange Online, the TotalCount returned in the response may incorrectly show a value of 0.  More Information Office 365 Exchange Online engineering…

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Authenticating against Exchange Web Services using certificate based OAuth2 tokens No ratings yet.

Overview This post contains step by step information on configuring your environment and authenticating against Exchange Web Services using certificate based OAuth2 tokens. The information in this blog post is only valid for connecting to Exchange Online mailboxes. Requirements In…

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PowerShell: Convert ConversationHistory from UserCreated to a Default Folder No ratings yet.

Time for a new article, this time talking about Conversation History Retention Policies. I have recently been working with some customers who reported that Retention Policies applied to Conversation History would not get applied. After a lengthily investigation it appeared…

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PowerShell: Apply Retention Policies or Auto-Archive Settings to Inbox sub-folders No ratings yet.

This week I’ve been spending some time in reviewing how Exchange Retention Policies and Outlook Auto-Archive setting are stored in a user mailbox.   If you’re wondering whether to start using Outlook Auto-Archive or the Exchange Retention policy I would like to…

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PowerShell/EWS: Searching for and deleting duplicate mailbox folders No ratings yet.

We’ve had some cases recently where an issue with migration has caused the migrated mailbox to contain duplicate folders (e.g. there may be two Calendar folders).  I have written a script that can process mailboxes and automatically remove duplicate folders. …

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