Cannot connect Outlook 2007 (SP3) to Online Exchange

Outlook was previously connected to local Exchange Server (2003) but this is not on the Network anymore and Outlook account deleted.

Within the last week I have been using online exchange. On 3 machines running Win XP (SP3) with Office 2007 (also SP3) I get the following when I try to connect to the Online Exchange system;


'The action cannot be completed. The connection to Microsoft Exchange is unavailable.  Outlook must bee online to complete this action'

However, on the same network, I have two machines with Outlook 2010, one on XP, one Win7 which connected no problem.

Here's what I have done to try and resolve the problem

1) Have ran offive 365 online machine software check.  Two updates were applied with note that Outlook should me connected manually (which is basically to use autodiscover).
2) Have created new profile
3) Have aplied Microsoft Knowledgebase fix 913843 (which actually I don't think is applicable to an Oline Exchange connetion)
4) Have ran Microsoft Autodiscover check which reported Test Passed (but with some warnings)
5) Have temporarily opened all ports on firewall

I note that many people seem to be having same problem

All successfully logon to online OWA no problem

Has anyone actually resolved this problem?
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ianmal2Asked:
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Sudeep SharmaConnect With a Mentor Technical DesignerCommented:
Did you ran the Windows Updates as well after the MS365 Readyness Tool?

We faced this problem on one of the PC today, I would check what was done to resolve it and update.

Sudeep
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Manpreet SIngh KhatraSolutions Architect, Project LeadCommented:
So you have narrowed down to the issue not being with User but the Machine\Outlook ?

- Rancy
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Davis McCarnOwnerCommented:
Unless you changed the domain name and have no dns server in house, you need to add an MX record to your dns.  Try PING MAIL.<domain.whatever> and see if it resolves properly on both a PC that works and one which doesn't.
http://technet.microsoft.com/en-us/library/cc759534(v=ws.10).aspx
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ianmal2Author Commented:
Yep, issue is with machine/outlook
No havn't run windows updates after MS365 Readynes Tool. Will do.
Re dns DNS all done. remember no problem with Outlook 2010 within same network
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ianmal2Author Commented:
Absolutely spot on. Got all 4 PCs connected after this.   I had done so many updates on the PCs prior to running the MS365readyness Tool that I never thought to run Windows Update again.  Thanks.
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