Outlook 2003 to Outlook 2000 Downgrade

Exchange 2000

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  • 2. forwarding contacts
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  • 4. OWA problem when pressing "reply" on emails
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Outlook 2003 to Outlook 2000 Downgrade

Postby THVrYXMgU3R1cm0 » Fri, 30 Jul 2004 02:10:01 GMT

I downgraded from Outlook 2003 to Outlook 2000 (don't ask, but it was an exchange 5.5 issue).  I have installed all of the service packs and checked in between each install and I can not open up Outlook 2000.  I get a general error whose proposed solution is to go check for updates (which I have done and installed).

Similar Threads:

1.Upgrade to Outlook 2003 then downgrade to Outlook 2000

I have a problem with a user's (Big Exec) mailbox on Exchange 2003.

We recently have been upgrading Office from 97& 2000 to 2003.

This particular person is using Act for his contacts and uses a Blackberry 
which he synchs with Outlook for e-mail and with Act for his contacts, 
calendar, etc.

Well, we upgraded his Office (including Outlook) and also his Act because 
his version 4.0 Act didn't like Outlook 2003.
We then found that the Blackberry desktop software is not compatible with 
Act and no upgrade is available that is.

So, we had to bring him back down to his Act 4.0 and to Outlook 2000.
Well, evidently Outlook 2003 made some changes to his mailbox so that it is 
not compatible with Outlook 2000.  Outlook won't shut down.  When you close 
it, the "Wait while Outlook exits" stays on for ever.  You have to go into 
the Task manager and kill the Outlook.exe process.

At first, I thought it was some dlls that 2003 left on the machine, so I 
took a computer that I built it up from scratch with Office 2000 on it, and 
it does the same thing.  I tested with a couple other mailboxes that have 
already been accessed by Outlook 2003 and they do the same thing.  I tested 
a couple mailboxes that have not been accessed by 2003 (the owners are still 
on 2000) and there was no problem.

So, that tells me that Outlook 2003 changed the mailbox.

Question:  Does anyone know a way to undo the changes so Outlook 2000 will 
function on the mailbox?

I thought about dumping his mailbox and creating a new one, but he is out of 
town with his Blackberry and I can't connect the new mailbox with the 
Blackberry without it being here.  I'd really like to get this fixed before 
he returns on Monday.

Any ideas?

Thanks in advance for any help you have.


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5.downgrade outlook 2003 to 2000


I have a user that upgraded to office 2003 beta. The time 
on the program has expired. I need to remove this version 
and put it back to office 2000. The outlook.pst file 
cannot be opened by outlook 2000 ( it gives a version 
related error). The import and export menu item on office 
2003 beta is greyed out. Is there a way to convert this 
back? Is the import export function disabled because it 
is a beta version? If I can get a version of Office 2003 
that will export to a .pst file, can I then import back 
into office 2000? 

Help Me Please!

Thank You!

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