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Exchange 2010 & Outlook 2007 & 2010 - Server reboot | login credential prompt | LAN

    Question

  • For those with Exchange 2010 (Outlook anywhere enabled) and Outlook 2007/2010, have any of you identified that when the Exchange 2010 is restarted and Outlook 2007/2010 sessions are still open (LAN), staff will be prompted to enter their AD credentials (from within Outlook) once Exchange 2010 is back online? Is this by Microsoft design and is there a fix? 

     

    Thanks in advance for your feedack.

    Monday, April 11, 2011 11:30 AM

Answers

  • If it's Basic Authentication then everytime when user opening Outlook in LAN then it's prompted for Credential. To avoid this you need to Set NTLM authentication instead of Basic authentication.

     

    -Mitesh Gosar | Skype:Mitesh.Gosar
    Monday, April 11, 2011 3:45 PM

All replies

  • is it using NTLM or basic, if basic I think this will be the case
    Regards, Mahmoud Magdy Watch Arabic Level 300 Videos about Exchange 2010 here: http://vimeo.com/user3271816 Read pretty advanced Exchange stuff I post here: http://www.enowconsulting.com/ese/blog.asp, follow my blog: http://autodiscover.wordpress.com , corp blog: http://ingazat.wordpress.com, Follow me on twitter http://www.twitter.com/_busbar and if you Liked my post please mark it as helpful and accept it as an answer
    Monday, April 11, 2011 11:36 AM
  • Are you referencing the (LAN) Outlook 2007/2010 - Outlook Anywhere client settings section? Whether Proxy authentication is set to NTLM or Basic?

     

    thanks.

    Monday, April 11, 2011 12:06 PM
  • Outlook Anywhere is set to Basic Authentication
    Monday, April 11, 2011 3:06 PM
  • AFAIK then it is correct
    Regards, Mahmoud Magdy Watch Arabic Level 300 Videos about Exchange 2010 here: http://vimeo.com/user3271816 Read pretty advanced Exchange stuff I post here: http://www.enowconsulting.com/ese/blog.asp, follow my blog: http://autodiscover.wordpress.com , corp blog: http://ingazat.wordpress.com, Follow me on twitter http://www.twitter.com/_busbar and if you Liked my post please mark it as helpful and accept it as an answer
    Monday, April 11, 2011 3:08 PM
  • Busbar, I did not understand your last reply?

    Monday, April 11, 2011 3:35 PM
  • If it's Basic Authentication then everytime when user opening Outlook in LAN then it's prompted for Credential. To avoid this you need to Set NTLM authentication instead of Basic authentication.

     

    -Mitesh Gosar | Skype:Mitesh.Gosar
    Monday, April 11, 2011 3:45 PM
  • as explained, this is a normal behavior so users will be prompted for passwords
    Regards, Mahmoud Magdy Watch Arabic Level 300 Videos about Exchange 2010 here: http://vimeo.com/user3271816 Read pretty advanced Exchange stuff I post here: http://www.enowconsulting.com/ese/blog.asp, follow my blog: http://autodiscover.wordpress.com , corp blog: http://ingazat.wordpress.com, Follow me on twitter http://www.twitter.com/_busbar and if you Liked my post please mark it as helpful and accept it as an answer
    Tuesday, April 12, 2011 7:22 AM
  • Yes, the symptom is by designed and I can reproduce it on my lab machine.

     

    Thanks,

    Simon

     

    Wednesday, April 13, 2011 2:10 AM
    Moderator
  • All,

    I'm experiencing this same issue.  I've checked my OWA authentication setting on Exchange 2010 SP1 and see that they are set to "Forms Based Authentication (Username only)" and not "Basic". However, my Outlook 2007 clients "Outlook Anywhere" settings have been automatically configure to "Basic".

    When I go in and manually change the Outlook clients from Basic to NTLM and restart Outlook, the settings revert back to Basic, so I can't reboot the Exchange to see if NTLM will resolve the Outlook Password prompt.

    Does anyone know:

    1. Why the Outlook Anywhere settings revert back to Basic from NTLM after I manually change them?
    2. How these settings are being applied to my Outlook 2007 clients and how I might be able to change them globally to all clients?  (I do NOT have a GPO on my network forcing these settings and all of my Outlook clients receive their profiles via autodiscover when they login and launch for the first time)

    Thanks,

    Rob

    Wednesday, April 13, 2011 4:24 PM
  • We're having this same problem now after migrating to Exchange 2010. The behaviour on Exhange 2003 was to simply reconnect silently when the server became available. That is preferrable to being prompted every time there is a disruption in the connection. Is there any way to configure 2010 to authenticate silently like 2003 did?
    Thursday, May 12, 2011 6:51 PM