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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
ID: 20400420
Is authentication set as NTLM or BASIC?  (It should be BASIC).

Jeff
TechSoEasy
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Expert Comment

by:Jeffrey Kane - TechSoEasy
ID: 20400425
also see http://go.microsoft.com/fwlink/?LinkId=66192 for more troubleshooting steps

Jeff
TechSoEasy
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Author Comment

by:innsolgroup
ID: 20400460
It is set to basic
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by:Jeffrey Kane - TechSoEasy
ID: 20400473
Then continue with the troubleshooting steps I linked above.

Jeff
TechSoEasy
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Author Comment

by:innsolgroup
ID: 20400735
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
ID: 20400739
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
TechSoEasy
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by:innsolgroup
ID: 20400766
I can confirm that!
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by:Jeffrey Kane - TechSoEasy
ID: 20402491
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
TechSoEasy
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Author Comment

by:innsolgroup
ID: 20407597
I really have no idea why this is not working the first time.
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by:Jeffrey Kane - TechSoEasy
ID: 20408375
I'm sorry but I'm a bit confused by your last comment... are you saying that its working now?

Jeff
TechSoEasy
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by:innsolgroup
ID: 20408389
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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Expert Comment

by:Jeffrey Kane - TechSoEasy
ID: 20408469
So, you didn't try the  "Send NTLMv2 response only" option as described in that page I linked above?

Jeff
TechSoEasy
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by:innsolgroup
ID: 20408566
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
ID: 20408837
Try starting Outlook from the command line with the /rpcdiag switch and see what you can find out.

Jeff
TechSoEasy
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by:innsolgroup
ID: 20409010
It Fails for the first 4 attemps then establishes the connection.
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by:Jeffrey Kane - TechSoEasy
ID: 20409057
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
TechSoEasy
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Author Comment

by:innsolgroup
ID: 20409111
My user has left for the day I will tackle it again in the morning.
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Accepted Solution

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innsolgroup earned 0 total points
ID: 20447576
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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