Decommissioned Exchange 2003 in a Hybrid 2010/365 environment and now XP clients receive an error opening Outlook.

Error when only some XP workstations open Office 2010:

The Microsoft Exchange Address Book was unable to log on to Exchange. Contact your system administrator if the problem persists.

Some Windows XP with Office 2007:

repetitive password prompts

Yesterday before I decommissioned the last Exchange 2003 server all was working properly.

Recognizing that XP is not supported it would be helpful if we could buy some time to upgrade to Windows 7.

Thank you for your time in advance!

K BAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Did you make sure your address books were migrated over to the new Exchange environment?  You should check each mailbox store to see which offline address book they have specified to use.

Also, make sure you migrated all the public folders over if they were being used at all.
K BAuthor Commented:
Important note... They work perfectly on Windows 7 Machines.
K BAuthor Commented:
AddressBookPolicy             :
ForwardingAddress             :
ForwardingSmtpAddress         :
OfflineAddressBook            :
JournalArchiveAddress         :
GeneratedOfflineAddressBooks  : {}
AddressListMembership         : {\Mailboxes(VLV), \All Mailboxes(VLV), \All Users, \Offline Global Address List...}
Has Powershell sent you back into the Stone Age?

If managing Active Directory using Windows Powershell® is making you feel like you stepped back in time, you are not alone.  For nearly 20 years, AD admins around the world have used one tool for day-to-day AD management: Hyena. Discover why.

K BAuthor Commented:
Also, on the only database on the only on-premise Exchange server:
Get-MailboxDatabase -Identity DB01 | select OfflineAddressBook

Can you check to make sure your offline address book has been moved to one of your new servers?

Do the XP machines run a different version of Office than the Windows 7 machines?
K BAuthor Commented:
A couple may have not made it properly ..some moved fine however...

Wouldn't there be an entry next to "OfflineAddressBook" with:
 get-mailbox -identity "TestUser" | select name, OfflineAddressBook ?

Windows XP machines have both office 2007 and 2010
Windows 7 machines have both office 2007 and 2010

the user's on xp with a problem can build a new profile on windows 7 (office 2007 or 2010) and it works fine.
What happens when you create a new Outlook profile on the XP machines?  Does that still fail?
K BAuthor Commented:
Yes same issue:

Creating new profile in XP workstations with Office 2010:

The Microsoft Exchange Address Book was unable to log on to Exchange. Contact your system administrator if the problem persists.

Creating new profile in XP workstations with Office 2007:

repetitive password prompts
Go into one of your mailbox stores and set the Offline Address Book at the store level and see if that helps.
K BAuthor Commented:
so will these cause all users to begin downloading a new book?
There are thousands that work properly and about 40 that have XP so I want to be cautious.
Why is Windows 7 no problem?
So everyone is on the same mailbox store?

It shouldn't matter if you only have the one offline address book in your environment.
K BAuthor Commented:
This is a hybrid/co-existance - multi-role Exchange 2010 server.
There are no mailboxes on the server.
AD has mail-enabled users as place holders with Target Addresses as,for now, all owa,ews etc & points to the 2010 server.  However all mailboxes live in the cloud - Office 365
ADFS, DirSync & Hybrid environment.
K BAuthor Commented:
suddenly started working.. the clients updated?

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
K BAuthor Commented:
I have no idea why "time" caused this to work.
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Office 365

From novice to tech pro — start learning today.