I am trying to connect Outlook 2007 to an SBS 2008 server using Outlook Anywhere but it is not working. Autodiscover seems to be OK but there is a problem with RPC. I get the error message "A web exception occurred because an HTTP 404 - NotFound response was received from IIS7" from ExRCA. OWA is working fine. I am using a 3rd Party Certificate. When I type https://localhost/rpc/rpcproxy.dll on the CAS, I get the following error: Error Summary HTTP Error 404.0 - Not Found The resource you are looking for has been removed, had its name changed, or is temporarily unavailable. <fieldset><legend>Detailed Error Information</legend> Module IIS Web Core Notification MapRequestHandler Handler StaticFile Error Code 0x80070002 Requested URL https://localhost:443/rpc/rpcproxy.dll Physical Path C:\Program Files\Windows Small Business Server\Bin\WebApp\SBS Web Applications\rpc\rpcproxy.dll Logon Method Anonymous Logon User Anonymous </fieldset> <fieldset><legend>Most likely causes:</legend> The directory or file specified does not exist on the Web server. The URL contains a typographical error. A custom filter or module, such as URLScan, restricts access to the file. </fieldset> <fieldset><legend>Things you can try:</legend> Create the content on the Web server. Review the browser URL. Create a tracing rule to track failed requests for this HTTP status code and see which module is calling SetStatus. For more information about creating a tracing rule for failed requests, click here. </fieldset> <fieldset><legend>Links and More Information</legend>This error means that the file or directory does not exist on the server. Create the file or directory and try the request again. View more information » </fieldset> The RPC directory mentioned in this error does not seem to exist. I have already reinstalled the RPC over HTTP Proxy feature and Outlook Anywhere but still no luck. Can anyone help with this?

Hi, Have you included autodiscover name in certificate, If certificate does not have autodiscover name then outlook anywhere does not work and throug this error. http://forums.msexchange.org/m_1800497404/mpage_1/key_/tm.htm#1800511512The Path of a virtual directory on the server does not match the path in Active Directory: http://technet.microsoft.com/en-us/library/dd535378(EXCHG.80).aspxAnil

Hey BruceJos, After reinstalling the RPC over Http Proxy feature did you run IISReset? -NS

Hi NS, Yes, I did run IISreset. Bruce

Hi Anil, Yes, the certificate includes the autodisover hostname: remote.******.co.uk The exchange server BPA does not throw up any errors relating to the virtual directory not matching AD. Bruce

I Believe when a RPC VD is recreated, by default "Anonymos" permission is given. Make Sure "Basic authentication" is enabled for RPC VD. -NS

The RPC Vdir does not appear to exist? How do I confirm this?

Thats strange. I tried to do in my LAB and I was able to..!! Can you try Restarting the Default Web Site.

I tried restarting the default web site but did not help. I have RPC and RPCWithCert showing under DefaultWebSite. I can browse RPC and get a blank screen after entering my credentials, which I believe is correct, but when I browse RPCWithCert using HTTPS I get the 404 error.

If RPC VD is showing blank when tried to browse, thats correct. With regards RPCWithCert, thats something which you can Ignore I believe as it gets created along with the component. If you go ahead and Enable the Outlook Anywhere, it should work...!! -NS

Outlook anywhere was already enabled and doesn't work. I have tried disabling OA, uninstalling RPC over HTTP proxy, reboot, re-installing RPC over HTTP proxy and re-enabling OA but still no luck.

Quote: “I type https://localhost/rpc/rpcproxy.dll on the CAS, I get the following error … I can browse RPC and get a blank screen after entering my credentials, which I believe is correct” So, when browsing /rpcproxy.dll, the error 404 won’t appear again, right? What’s the current error information in the ExRCA? Could the outlook anywhere be used when you set client in the internal LAN, and check “On fast network …” and “On slow network …”? Does the redirection set on the /RPC virtual directory? Please run Test-OutlookWebServices and check if there’s any related error output Please check if there’s any related event in the application log and IIS log after reproduce the issue Please run ExBPA against the server for health check James Luo TechNet Subscriber Support in forum If you have any feedback on our support, please contact tngfb@microsoft.com Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

How's the issue currently? Any update?Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Quote: “I type https://localhost/rpc/rpcproxy.dll on the CAS, I get the following error … I can browse RPC and get a blank screen after entering my credentials, which I believe is correct” So, when browsing /rpcproxy.dll, the error 404 won’t appear again, right? I still get the 404 error when browsing rpcproxy.dll What’s the current error information in the ExRCA? A Web exception occurred because an HTTP 404 - NotFound response was received from IIS7 Could the outlook anywhere be used when you set client in the internal LAN, and check “On fast network …” and “On slow network …”? Only tried using external LAN. Will try on internal LAN. Does the redirection set on the /RPC virtual directory? Cannot find /RPC virtual directory in IIS7 Please run Test-OutlookWebServices and check if there’s any related error output Results: PleId : 1013 Type : Error Message : When contacting https://remote.******.co.uk/Rpc received the error T he remote server returned an error: (404) Not Found. Id : 1017 Type : Error Message : [EXPR]-Error when contacting the RPC/HTTP service at https://remote.******.co.uk/Rpc. The elapsed time was 15 milliseconds.ase check if there’s any related event in the application log and IIS log after reproduce the issue Please run ExBPA against the server for health check No critical errors but the following warnings: 1. The default web site contains the /rpc directory 2. The log file for the Windows SharePoint services configuration database is getting large. 3. The RPC Proxy Website value is missing. 4. Web.config exists in the Rpcproxy directory. Bruce

Quote: “I have RPC and RPCWithCert showing under DefaultWebSite” It seems that the “RpcProxy” entry is missing in the registry, please add it and reinstall the RPC/HTTP proxy component (KB 969743)Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.