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Outlook 2007 displays Need Password in lower left-hand corner of the screen

We are experiencing an intermittent problem where e-mail stops flowing into Outlook 2007 and in the lower left hand part of the screen, there is a message that says Need Password (this problem may occur once every 2 or 3 days and it does not happen to everyone).  If you click on this message and then select "Type Exchange Password and Connect" (you aren't prompted to enter your password) e-mail goes into Outlook again.  The problem occurs with people connected to the same LAN that the Exchange 2010 (the exchange server is Server 2008 R2 64bit) server is on and Outlook 2007 is used Cached Exchange Mode.  The client operating systems are XP SP3 and Windows 7 (both 32 bit).

Thanks for your help.

Thanks for your help.
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drock1978
Asked:
drock1978
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2 Solutions
 
comnutsCommented:
Enable the logging of Outlook 2007 (http://office.microsoft.com/en-us/outlook-help/what-is-the-enable-logging-troubleshooting-option-HA001230421.aspx) and see if you can find anything from the logs. Look into Sync Failures folder for errors as well.
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davorinCommented:
In previous post please ignore the part of installing SP2 for Exchange 2007 as you have 2010.
Anyway it is good to have fully patched server.
You can also check if you are using NTLM auth on server and clients and try to disable the option "On Fast Networks, connect using HTTP first, then connect using TCP/IP"
Du you get some problems while running BPA?
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drock1978Author Commented:
I have update rollup 2 for exchange 2010 SP1 installed so I am fully patched.  How do I determine if I am using NTML authinication on the server?  In the Outlook Anywhere settings on the client computer, I am set up for basic authentication. Also, the "On Fast Networks, connect using HTTP first, then connect using TCP/IP" is already disabled.

What is BPA?
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drock1978Author Commented:
Also, I am getting the following events are logged in my Exchange server once per day at around 4 am:

Event ID 9360

OABGen encountered an error while generating the changes.oab file for version 2 and 3 differential downloads of address list '\Global Address List'.  The offline address book has not been updated so clients will not be able to download the current set of changes.  Check other logged events to find the cause of this error.
If the cause of the problem was intentional or cannot be resolved, OABGen can be forced to post a full offline address book by creating the DWORD registry key 'HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MSExchangeSA\Parameters\OAL post full if diff fails' and setting it to 1 on this server.  When OABGen next generates the offline address book, clients will perform a full OAB download.  After that time, the registry key should be removed to prevent further full downloads.
- \Default Offline Address List

Event ID 9340

A new parent Legacy Exchange DN container value '/o=BIG-R/ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Recipients' was found during generation of the differential update file for offline address list '\Global Address List'.  This will force clients using this offline address list to do a full download of the offline address list.
- \Default Offline Address List

I'm not sure if these errors have anything to do with this problem.  This is not affecting the global address book as users are not having any problems accesing the global address book.
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davorinCommented:
"How do I determine if I am using NTML authinication on the server?"
Using exch. mngt. shell type get-outlookanywhere and you will see under clientauth.metod basic or ntlm.
Same thing you can see under exchange management console->server config->client access->properties of your server-> outlook anywhere tab->client auth. method.

http://technet.microsoft.com/en-us/library/bb124149.aspx

Outlook configuration:
http://office.microsoft.com/en-us/outlook-help/use-outlook-anywhere-to-connect-to-your-exchange-server-without-vpn-HP010102444.aspx
"Only connect to proxy servers that have this principal name in their certificate" use only if you have entered server name listed as principal name in certificate.

BPA is Best Practice Analyzer - you can find it in exchange management console under tools section.
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drock1978Author Commented:
I did two things at the begining of the week.  I added CNames in my local dns for OWA and Autodiscover.  I also turned on logging in Outlook for the computers that are having this problem so that I can pull up the logs when the problem happens again.  So far, I have not had any problems this week.  Also, we are set up to do Basic Authentication on both the server side and client side for Outlook Anywhere (I don't think this has anything to do with Outlook Anywhere as my remote users who connect via Outlook Anywhere have had zero problems).
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drock1978Author Commented:
I followed davorins comments and added the owa and autodiscover cname records in my local dns which point to the netbios name of my exchange server.
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