Unable to login to OWA from a Win98 PC

Tech-Archive recommends: Repair Windows Errors & Optimize Windows Performance

From: Sam Brooks (Brooks_at_discussions.microsoft.com)
Date: 08/13/04 

Date: Fri, 13 Aug 2004 11:23:02 -0700

Login to server via https: login prompts for user name, password, domain
Next get prompt that says about to display secure and non-secure items.
Cick OK
Screen starts to show OWA with the divider down the left side but then it
prompts for the user name and password again. It will then just keep
prompting over and over.

If I select Cancel instead of OK, I get an error 401. I then click the GO
button and the web page is displayed without having to login again and
everything is fine. I did some research with the IIS log files and it looks
like the following:

2004-08-13 17:43:13 207.241.132.143 keystone\user1 192.168.0.21 443 GET
/exchange/user1/Inbox/ Cmd=contents 200
Mozilla/4.0+(compatible;+MSIE+6.0;+MSN+2.5;+Windows+98) this is ok.

After it prompts for the second login I looked at the log and it shows

2004-08-13 17:42:20 207.241.132.143 keystone\mahouston 192.168.0.21 80 GET
/exchange/user2/Inbox/ Cmd=contents 401
Mozilla/4.0+(compatible;+MSIE+6.0;+MSN+2.5;+Windows+98)

The difference is somehow the local pc is substituting another user name or
AD on IIS is messing up the lookup somewhere in the process. In the fist log
the user name is user1, in the second login the user name is user2. This is
why it keeps prompting for user name and password because user1 does not have
access to user2 but I never answered user2 anywhere so where is this comming
from?

Client Win98 PC, IE6 SP1
I installed Java from Sun
Exchange 2000 SP3 with rollup
Windows Server 2000 SP4 All Critical updates applied as of 8/13/2004
I cleared the cache and cookies on the Client PC.
I changed the NT Authentication settings for IE Explorer
I changed the login name on the Client PC to something different then the AD
user name.
I have found hundreds of postings about this with lots of things about
security, but this is only a problem for me with Win98 and WinXP users.
Win2000 users never have this trouble. So I have to think this is a bug or
needs some kind of workaround.

I have run out of options.

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