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Outlook 2003 on Vista Ultimate cannot connect to Exchange 5.5

By sjdiddee ·
Hi there,

I have recently installed Windows Vista Ultimate on my Acer Laptop, with Centrino 1.6, and 1.25GB RAM. Everything works fine, however, when I try to connect to my Exchange Server (5.5), it opens the window for me to enter my domain username and password, and simply WILL NOT authenticate me! I cannot add my laptop to the domain as well (Windows NT4).

I do know that Outlook 2007 will not work with Exchange 5.5, but Outlook 2003 on Vista? Everything worked fine when I had XP Pro installed for almost 2 years.

Can you please help me?! I have not been able to check my mail for almost a week!

Thanks and best regards,

Shiv

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Igot the same problem with Outlook 2003 on Vista Ultimate cannot connect to

by jaimito666 In reply to Outlook 2003 on Vista Ult ...

I think that te answer is here
http://support.microsoft.com/lifecycle/?p1=1776
I got exactly the same problem and i suppose that windows vista is uncompatible with Exchange 5.5 and Win Nt4. I can add my pc to the active directory on win2003 (no problem) but I cannot add my laptop to the domain as well (Windows NT4).

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solution to Outlook 2003 on Vista Ultimate cannot connect to Exchange 5.5

by jaimito666 In reply to Outlook 2003 on Vista Ult ...

Yess it works...
check the link
http://www.vista64.net/forums/vista-general/41642-windows-vista-outlook-2003-exchange-5-5-a.html

and ypu will find:

use Vista Business, but I assume basic network portion would be the same.
Are you able to log on to the network with your Vista PC at all? Or, you are
logging in locally, then trying to run Outlook?

My first issue was not being able to login to our NT4 domain. Fortunately,
I attended Microsoft event one day, and got an e-mail address for Vista
project person. He told me to do this.
Start, All Programs, Administrative Tools, Local Security Policy, Local
Policies, Security Options, Network Security, select "Lan Manager
authentication level", change it to "Send LM & NTLM - use NTLMv2 session
security if negotiated".

Hope this will help you.

Since there are some apps which do not run on Vista, I run Virtual PC 2007,
and run Windows 2000 and Windows XP SP2 over it. Unfortunately, I cannot do
everything with Vista at this moment. As long as you are running equal or
older version of Windows on Virtual PC, you don't have to pay for the
licenses.
This it works fot me....

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