Outlook VIA RPC works but only after a few logon attemps

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

Jeff
TechSoEasy

also see http://go.microsoft.com/fwlink/?LinkId=66192 for more troubleshooting steps

Jeff
TechSoEasy

It is set to basic

Then continue with the troubleshooting steps I linked above.

Jeff
TechSoEasy

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.

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

I can confirm that!

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

I really have no idea why this is not working the first time.

I'm sorry but I'm a bit confused by your last comment... are you saying that its working now?

Jeff
TechSoEasy

Nah it is not working, i think it is down to the wireless connection.

But other users on the same setup have no issues.

So, you didn't try the  "Send NTLMv2 response only" option as described in that page I linked above?

Jeff
TechSoEasy

Yes i did, it did not make any difference. I did it via the better option but did not do it via GP.

Try starting Outlook from the command line with the /rpcdiag switch and see what you can find out.

Jeff
TechSoEasy

It Fails for the first 4 attemps then establishes the connection.

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

My user has left for the day I will tackle it again in the morning.