Outlook keeps asking for password.

Hello,

I have a server 2008 with exchange 2007.  all the pc's on the network connected to the DC.

we logon to the network  ok with the domain controller but when we open Outlook it always ask for a password.

I can access network share files from the server without passwords but only Outlook request for a password each time.

I have computer XP, Vista, W7.
Any suggestions would be appreciated
LENEROAsked:
Who is Participating?
 
Stelian StanNetwork AdministratorCommented:
You can apply Service Pack 3 directly. I don't see any reasons NOT to.
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Manpreet SIngh KhatraSolutions Architect, Project LeadCommented:
What is the connection type set for users "NTLM or Basic ?
Is the issue happening to all users in the Organization ?
How Outlook connect to Exchange? RPC over Http or TCP/IP?
Exchange version ?
Hope certs arent expired ?

Outlook 2007 client keeps asking for password on exchange 2007
http://www.experts-exchange.com/Software/Server_Software/Email_Servers/Exchange/Q_23476769.html

Outlook 2007 prompts you repeatedly for a password under certain network conditions (HOTFIX)
http://support.microsoft.com/kb/956531

- Rancy
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LENEROAuthor Commented:
Hi thank you for the reply.
What is the connection type set for users "NTLM or Basic ? **Basic
Is the issue happening to all users in the Organization ? Yes
How Outlook connect to Exchange? RPC over Http or TCP/IP? HTTPS
Exchange version ?2007
Hope certs arent expired ? No

thanks again
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Manpreet SIngh KhatraSolutions Architect, Project LeadCommented:
As its happening to all of the users issue more seems to be with the server.

So certs are fine .... Authentication method on server is Basic ..... Https mode of connection ..... Exchange 2007 SP ?

- Rancy
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LENEROAuthor Commented:
I Still have Exchange 2007.. should I upgrade to SP 2 then 3? my friend told me that since I have Small business server 2008 it could give me a lot of exchange problems.

Is he wrong?  I dont have alot of exchange experience.
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HornAlumCommented:
I remember we had issues with name resolution and using https, so we abandoned that and went back to normal TCP/IP and the prompts went away. You may need to look at your RPC/HTTPS configuration.
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