Outlook 2007 keeps asking for a password when connecting to Exchange 2007 (RPC over HTTP – Outlook Anywhere)
Being Microsoft – there doesn’t seem to be a single way to resolve this, but for me in various different installations one of the below, or a combination, solved the problem:
- Make sure Basic Auth and Windows Auth was enabled under IIS for the follow Virtual Directories.
Autodiscover, EWS, OAB, RPC, RpcWithCert - Using Exchange Management Console, make sure that the Outlook Anywhere is set to NTLM
- Make sure that under your Connection tab (Outlook) you have a matching auth type to the one specified on the server for outlook anywhere (NTLM as Point 2)
- Try the following Registry changes on clients machines. Microsoft explained that this should fix the NTLM missmatch. http://support.microsoft.com/default.aspx?scid=kb;en-us;820281 (although this didn’t work for me, although this is recommended by Microsoft – probably try the other points before this)
- OUR FAVORITE
In IIS manager select the default website
Open Authentication
Enable windows authentication
Click Advanced settings
Uncheck “Enable kernel-mode Authentication”
IISRESET(It appears that Windows maybe attempting to use Kerb Auth first (via RPC over HTTP), failing, then asking for a password. The above Point 5 disabled Kerb-auth)
January 29th, 2009 at 3:31 am
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June 2nd, 2009 at 3:42 pm
Thank you for the tip it solved my outlook 2007 problem.
Kwartin
July 2nd, 2009 at 7:22 pm
Excellent thanks, Auth option on RPC, RpcWithCert fixed it for me !
July 22nd, 2009 at 8:22 pm
Awesome, thanks for the tips. Solved it for me.
Eric Monse
September 18th, 2009 at 12:04 pm
Thank you very muc, we have solved our problem… Thanks and thanks..
November 3rd, 2009 at 4:09 pm
Thank you for your fix. It did not work for me at first. I configured as specified, but Outlook still kept asking for a password. Then I connected my PC through VPN to the company network and it started working. Then I disconnected and it still worked. How strange, but I am happy.
November 23rd, 2009 at 2:28 pm
Nothing changes your opinion of a friend so surely as success – yours or his.
January 12th, 2010 at 6:37 pm
IIS Windows Auth fixed my problem, thanks a lot!
February 7th, 2010 at 2:31 pm
Oulook asks me straightaway for exhange password. But I don’t need to use exchange, just regular email. Will not let me open up outlook without exchange details. Any ideas ?
February 15th, 2010 at 1:15 pm
Hi chris,
It will never let you open the profile since it’s an exchange profile.
I advise you to setup 2 seperate accounts one for pop and seperate one for your exchange account
If you want to see your mails without connecting to the exchange.
good luck
February 25th, 2010 at 6:15 pm
For me, changing the registry worked. Thanks!