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Outlook 2007 problems connecting to office 365 (win 7)

Hi All.

We are having a strange issue. Just finished migrating mailboxes from on-prem ex2007 to o365.
Outlook 2013 clients can get to the migrated mailboxes just fine. The problem is with outlook 2007 (running on win 7). If i want to iuse the same mailbox on a win 7 computer running 2013 i get no issues

I add the new provide via the mail cpl.

Outlook thinks for a minute, asks for the credentials and finally shows "congratulations" with 3 green check marks (see attached outlook2007 congrats)

It would seem all is good.

then i open outlook, choose the new profile and get a " The connection to MS Exchange is unavialable. Outlook must be online or connected to complete this action."
When i hit OK i get a    a Microsoft exchange windows pop up with the server address with a @domainname.com at the end and the proper user name in the mailbox field (see attached outlook2007_1.jpg)

when i hit "check name" i get " "the name cannot be resolved"
If i just hit OK i get " Caqnnot open your email folders. The server is unaviaqlable"

Like i mentioned this works just fine from this computer using webmail OR another computer running 2013

thanks in advance

!a
outlook2007congrats.jpg
outlook2007congrats.jpg
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wolfgordon
Asked:
wolfgordon
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1 Solution
 
Vasil Michev (MVP)Commented:
Run the Test E-mail Auto-configuration wizard (right-click on the Outlook icon in the tray), see if it can obtain the correct autodiscover info. What often happens with On-prem Exchange is that Outlook will always try to connect to the local server, you can work around this by following the steps here:

http://support.microsoft.com/kb/2212902

Also, make sure you have the latest updates for the 2007 clients, you need at least these:

http://community.office365.com/en-us/w/manage/updates-to-outlook-2010-and-outlook-2007.aspx

Run the Office 365 desktop setup on one of the machines, it should install all needed updates for you.
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CarlosDominguezCommented:
First, the service packs are needed. Running Outlook 2007 with Office365 accounts you need to confirm that you have installed Office SP2 or SP3. Download and install Office2007 SP3. At the same time, review you have also installed the W7 SP1.

If it doesn't solve, then connect to your office365 account, and enter configuration, software, desktop setup, and it will check all the additional needed updates for your Outlook installation, if any. For sure, it will have to install the office365 session plugin.

Third, probably you have to restart the computer, and if your account doesn't work, try to configure it again from the beginning.
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wolfgordonAuthor Commented:
Hi Guys i think i solved it. Just to let you know, i did made sure i had latest sp on office 2007 and run the 'desktop setup assistant' several times.

 it was a basic thing that i overlooked: MS Security Essentials. Once i disabled 'real time scanning' that, outlook 2007 connected no problem. I need to figure out how to have the MS essentials on (maybe some exception in there for outlook?)  AND have 2007 run ok but for now this will work.
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wolfgordonAuthor Commented:
it was the MS security essentials conflicting with outlook2007 i guess. when i disabled the real time scan outlook connected.
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