Outlook 2007 repeatedly prompted the users to enter their credentials when you try to connect to an Exchange mailbox

Outlook 2007 repeatedly prompted the users to enter their credentials when you try to connect to an Exchange mailbox
The user try to enter their password but its not acceptable and the credential box keep on repeating & the users are able to access email from exchange server and able to send and receive mail as well.
Other issue that this cause is the user are not able to access out of the office from outlook 2007 client but can do so from OWA just fine.

This is all started about a week after the last windows update ( mainly SharePoint & .Net update) before that all users ware working fine without any credentials prompt

Heres My system info:
Server: SBS 2008 with Exchange 2007
Client side: Win 7 Pro 64bit and XP Pro all with Outlook 2007 SP2

This issues happens to all users no matter what OS they are running.

Any idea how to fix it.
nalmalehAsked:
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Syed Mutahir AliTechnology ConsultantCommented:
Update your exchange server to Update rollup 9 ; that has been known to fix this issue

http://www.experts-exchange.com/OS/Microsoft_Operating_Systems/Server/SBS_Small_Business_Server/Q_24980995.html


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nalmalehAuthor Commented:
Found the solution  based on the other links ..

Thanks for the help.
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