Outlook 2010: The connection to Microsoft Exchange is unavailable

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Outlook 2010: The connection to Microsoft Exchange is unavailable

Error:

The connection to Microsoft Exchange is unavailable. Outlook must be online or connected to complete this action.

Software:

Outlook 2010 and Exchange 2010

Possible Solution:

Start the “Microsoft Exchange Address Book” Service on the Exchange Server

GUI: Start -> Run -> Services.msc -> Click on “Microsoft Exchange Address Book” -> Click the “Start” button

Command Line: net start MSExchangeAB

18 Comments so far:

  1. RamoSmile says:

    Hello,

    Just to thank you, thank you, thank you.

    Regards

  2. Andy says:

    I second that, thank you, thank you, thank you.

  3. Maarten Docter says:

    I had a problem that my Outlook 2010 ‘Reply all’ button wasn’t working and showing the same error message from the taskbar. Starting the Address Book service, also fixed this issue. Thank you for sharing!

  4. Roshni says:

    I cannot find “Microsoft Exchange Address Book” in run command :(

  5. microtom says:

    Dude, read again ;) You need to open the Services console using the run command. You can alternatively use right click on my computer and select “manage”.
    Start -> Run -> Services.msc -> Click on “Microsoft Exchange Address Book” -> Click the “Start” button

    @Roshni

  6. veronica says:

    I have the same issue as Roshini, I cannot find “Microsoft Exchange Address Book” from Manage services

  7. Kris Coady says:

    Got the same error here with Outlook 2007 clients and an Exchange 2013 server. Our server, however, does not have a service named “Microsoft Exchange Address Book”

  8. Enrico says:

    I keep getting a message that Outlook 2010 exchange is unavailable. I tried right-clicking on computer in Windows 7 to get to the Microsoft Exchange Address Book like was suggested, but I don’t know where to go from there to fix the issue.

  9. Enrico says:

    Can you help me get to the Microsoft Address Book?

  10. Kris Coady says:

    Got the problem fixed in my setup. Had nothing to do with an Exchange Address Book (which simply doesn’t even have a service on my server). Problem turned out to be related to certification.

    I wrote a small guide on how I fixed it here: http://www.experts-exchange.com/Software/Server_Software/Email_Servers/Exchange/Q_27995660.html#a38783217

  11. veronica lee says:

    I had the same issue for months. I have to use webmail until last week, for whatever reason, the issue resolved itself, and I was able to connect to the microsoft exchange server. I did not make any changes to the setting nor the exchange server. The only difference was I have just upgraded my internet capacity.
    by the way, the link to the guide does not take me to the guide.

  12. Ajun says:

    Many Thanks microtom…

  13. nir says:

    @Roshni
    Microsoft Exchange Address Book is on the CAS server.

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