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Exchange 2003 RPC Over HTTP Not working

Hello All,

     I have an Exchange 2003 Server that is setup for RPC over HTTP.  It has been working just fine but today no users can connect anymore via Outlook.  Now the Exchange server is running and seems to be fine.  People can access e-mail if they connect via VPN or via Webmail.  My question is....What services should i check or what is the best way to trouble shoot?  Not sure what services are used for this and would like to fix without a restart if possible.  Thanks. for the help.
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1 Solution
Could you please tell us the error messages?

Please take a look at these KB, maybe they can solve your problems.

Error message when Outlook 2003 users connect to Exchange Server 2003 by using RPC over HTTP: "Server Unavailable"

Troubleshooting RPC over HTTP Communications

Good luck!
fv858Author Commented:
Well on the client side the error they are getting is Task Microsoft Exchange server Reported Error (0x8004011D).  I finally tried rebooting the server but still have the same issue.  I'm going through the articles above to see if they provide help.
fv858Author Commented:
Looks like it's the security certificate.  I keep getting errors on my CA from my exchange server.
fv858Author Commented:
Yup...once I updated the certificate and then replaced the ones on the laptops everything was golden.  Thanks for your help.
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