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Outlook VIA RPC works but only after a few logon attemps

Posted on 2007-12-03
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Last Modified: 2010-04-19
A couple of my users are having issues logiing into outlook via their bigpond wireless cards.

It lets them in but only after they have entered in their information 4-5 times.

Other users do not seem to have the same issues.
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Question by:innsolgroup
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by:Jeffrey Kane - TechSoEasy
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Is authentication set as NTLM or BASIC?  (It should be BASIC).

Jeff
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by:Jeffrey Kane - TechSoEasy
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also see http://go.microsoft.com/fwlink/?LinkId=66192 for more troubleshooting steps

Jeff
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by:innsolgroup
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It is set to basic
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by:Jeffrey Kane - TechSoEasy
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Then continue with the troubleshooting steps I linked above.

Jeff
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by:innsolgroup
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I have checked the above link and all is well.

Just dont know why it takes 5 attempts before it will connect to the server. Is there a way to extened the timeout amount for the response from the server.
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by:Jeffrey Kane - TechSoEasy
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In the Microsoft Exchange Proxy Settings (where the RPC over HTTP connection is configured), make sure that the box is checked for "On slow networks, connect using HTTP first, then connect using TCP/IP"

Jeff
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by:innsolgroup
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I can confirm that!
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by:Jeffrey Kane - TechSoEasy
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I don't really know what else to suggest, but I did find this which could help:
http://apps.wharton.upenn.edu/brainstorm/index.cfm?method=read&entry_id=1186

Jeff
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by:innsolgroup
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I really have no idea why this is not working the first time.
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by:Jeffrey Kane - TechSoEasy
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I'm sorry but I'm a bit confused by your last comment... are you saying that its working now?

Jeff
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by:innsolgroup
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Nah it is not working, i think it is down to the wireless connection.

But other users on the same setup have no issues.
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by:Jeffrey Kane - TechSoEasy
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So, you didn't try the  "Send NTLMv2 response only" option as described in that page I linked above?

Jeff
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by:innsolgroup
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Yes i did, it did not make any difference. I did it via the better option but did not do it via GP.
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by:Jeffrey Kane - TechSoEasy
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Try starting Outlook from the command line with the /rpcdiag switch and see what you can find out.

Jeff
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by:innsolgroup
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It Fails for the first 4 attemps then establishes the connection.
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by:Jeffrey Kane - TechSoEasy
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The fact that it's five times consistently is interesting.  So I did a little digging into RPC over HTTPS to find that it actually makes 5 concurrent connections.

Since these laptops belong to the domain, you actually can set the authentication to NTLM, but you also need to modify a registry key for this to work properly.

 HKLM\System\Current\ControlSet\Control\LSA\lmcompatibilitylevel

Change the value to 3

Reference:  http://redmondmag.com/columns/article.asp?EditorialsID=654

Jeff
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by:innsolgroup
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My user has left for the day I will tackle it again in the morning.
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innsolgroup earned 0 total points
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This issues has been resolved.

The only thing I could do was reintall both machines and it all work great now.

I do not know what was wrong.
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