Creating and Sharing a Personal Calendar in Exchange

Many times Exchange users want to share a personal calendar with coworkers without jumping through the hoops of requesting a new shared or resource mailbox. I’m going to tell you how to do that without setting delegates or giving away more information than you want. (These instructions are for Outlook 2016, but they should be pretty close for 2013 & 2010.)   1. Switch Outlook […]

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Message bounces with StorageError when attaching another email

If you attach one email to another, you might get this bounce message (aka “NDR” or Non-Deliverable Report): John Doe ( The e-mail system had a problem processing this message. It won’t try to deliver this message again. Diagnostic information for administrators: Generating server: #550 5.6.0 M2MCVT.StorageError; storage error in content conversion ## You probably have Outlook configured in “online” mode. In other […]

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Outlook OST file is in use and cannot be accessed

If Outlook doesn’t shut down properly for whatever reason–and those reasons could be legion–you might see this error the next time you try to start it: A restart of your computer will fix this problem 95% of the time. However, that’s not always immediately practical and what do you do if it doesn’t? First, if you can’t reboot right now, open the Task Manager and […]

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New Outlook Profile: The Connection to Microsoft Exchange is Unavailable

When setting up a new Outlook profile (in 2010 & 2013, at least), sometimes you’ll see this error: The action cannot be completed. The Connection to Microsoft Exchange is unavailable. Outlook must be online or connected to complete this action. This is almost never because Exchange is unavailable or because Outlook is offline. The problem is because something has gone wrong with the Autodiscover process […]

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Outlook Says You’re Disconnected When You Open the Address Book

I had a case recently in which the end user couldn’t add any resource calendars to Outlook. Every time she tried, she would get this error message: “The connection to Microsoft Exchange is unavailable. Outlook must be online or connected to complete this action.” Which was curious because the Outlook status bar said it was connected and she was able to send and receive emails.

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Flawed password management model for Microsoft’s new Outlook app

Microsoft’s new Outlook for iOS and Android isn’t like other ActiveSync clients. In fact, it isn’t really an ActiveSync client at all. The actual ActiveSync client is a Microsoft-owned server that stores your username and password in order to get data from the Exchange server and then push it to the Outlook app. Why they didn’t just make a standard ActiveSync app and store the […]

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Exchange Users Unable to Connect with Outlook 2010

Over the past couple of weeks, I’ve had a rash of Exchange users who are unable to connect using Outlook. They don’t get an error message; Outlook just spins its wheels forever. If they try to set up a new Mail profile via the Control Panel app, it will connect to the server to verify the account, but then freeze trying to configure the local […]

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