I'm getting the following error when I try to install the Client Access role. I've installed all the patches needed prior to running this install. Client Access Role Failed Error: The following error was generated when "$error.Clear(); if (!(get-service MSExchangeADTopology* | where {$_.name -eq "MSExchangeADTopology"})) { install-ADTopologyService } " was run: "There are no more endpoints available from the endpoint mapper. (Exception from HRESULT: 0x800706D9)". There are no more endpoints available from the endpoint mapper. (Exception from HRESULT: 0x800706D9) Click here for help... http://technet.microsoft.com/en-US/library/ms.exch.err.default(EXCHG.141).aspx?v=14.1.218.11&e=ms.exch.err.Ex88D115&l=0&cl=cp Elapsed Time: 00:00:31 Finalizing Setup Cancelled

Hi, Please ensure the Windows firewall service is started and try again. Best Regards!

Any update on the issue?Gulab | MCITP: Exchange 2010-2007 | Lync Server 2010 | Windows Server 2008 | Skype: Exchange.Ranger | Blog: www.ExchangeRanger.Blogspot.com

Hi, Please ensure the Windows firewall service is started and try again. Best Regards! I've verified that that Windows firewall service is started. Still no go.

My bad on the response time. For some reason this particular thread isn't notifying me of responses. I think I selected the notify me to late. Thanks for jumping on and trying to help guys.

I would say restart the Windows Firewall service and try? Are you installing this server on DC or Member server? Gulab | MCITP: Exchange 2010-2007 | Lync Server 2010 | Windows Server 2008 | Skype: Exchange.Ranger | Blog: www.ExchangeRanger.Blogspot.com

Heya Gulab, So I ran the install once more and the error has changed. Which makes it very frustrating. Here is the new error message. Related in a way you think? Summary: 3 item(s). 1 succeeded, 1 failed. Elapsed time: 00:01:33 Preparing Setup Completed Elapsed Time: 00:00:10 Client Access Role Failed Error: The following error was generated when "$error.Clear(); $InternalOwaUrl="https://" + $RoleFqdnOrName + "/owa"; new-OwaVirtualDirectory -DomainController $RoleDomainController -InternalUrl $InternalOwaUrl; " was run: "The Active Directory object for virtual directory 'IIS://IT-SERVER.company.local/W3SVC/1/ROOT/owa' on 'IT-SERVER' could not be created. This might be because the object already exists in Active Directory. Remove the object from Active Directory, then re-create it.". The Active Directory object for virtual directory 'IIS://IT-SERVER.company.local/W3SVC/1/ROOT/owa' on 'IT-SERVER' could not be created. This might be because the object already exists in Active Directory. Remove the object from Active Directory, then re-create it. Active Directory operation failed on IT-SERVER.company.local. This error is not retriable. Additional information: A value for the attribute was not in the acceptable range of values. Active directory response: 00002082: AtrErr: DSID-03050C66, #1: 0: 00002082: DSID-03050C66, problem 1005 (CONSTRAINT_ATT_TYPE), data 0, Att 3 (cn):len 158 A value in the request is invalid. Click here for help... http://technet.microsoft.com/en-US/library/ms.exch.err.default(EXCHG.141).aspx?v=14.1.218.11&e=ms.exch.err.Ex88D115&l=0&cl=cp Elapsed Time: 00:01:22 Finalizing Setup Cancelled

Hi, Check in IIS if you see OWA virtual directory. If you see the OWA virtual directory than delete it. Once it's done, start the installation again and post the result. Gulab | MCITP: Exchange 2010-2007 | Lync Server 2010 | Windows Server 2008 | Skype: Exchange.Ranger | Blog: www.ExchangeRanger.Blogspot.com

Unfortunately, I don't see an OWA directory in IIS.

I came across this thread. But I really don't think it has to do with corruption. The CAS is doing something during the install that isn't correct. http://social.technet.microsoft.com/Forums/en/exchange2010/thread/f7c00667-21a9-44fe-9c0d-d74b2ea16eb3

I came across this thread. But I really don't think it has to do with corruption. The CAS is doing something during the install that isn't correct. http://social.technet.microsoft.com/Forums/en/exchange2010/thread/f7c00667-21a9-44fe-9c0d-d74b2ea16eb3 Did you gave a try downloading the new Exchange SP1 file and than installing it? If the issue still exist than i would recommend you to uninstall IIS and re install it. Once it's done, start the installation again. Post the update. Gulab | MCITP: Exchange 2010-2007 | Lync Server 2010 | Windows Server 2008 | Skype: Exchange.Ranger | Blog: www.ExchangeRanger.Blogspot.com

Hi, Please ensure the Windows firewall service is started and try again. Best Regards! I've verified that that Windows firewall service is started. Still no go. Was the firewall service disabled? If it was, you should have restarted the server after you enabled it. Also, make sure that you have ipv6 enabledMartina Miskovic

Hi Berry, Please have a try: Download Metabase Explorer from the link http://www.microsoft.com/download/en/details.aspx?id=17275 . Use Metabase Explorer and deleted “Owa” from the location 'IIS://IT-SERVER.company.local/W3SVC/1/ROOT/owa' in Metabase. Initiate installation of ClientAccess role. Best Regards!

Hi Berry, Please have a try: Download Metabase Explorer from the link http://www.microsoft.com/download/en/details.aspx?id=17275 . Use Metabase Explorer and deleted “Owa” from the location 'IIS://IT-SERVER.company.local/W3SVC/1/ROOT/owa' in Metabase. Initiate installation of ClientAccess role. Best Regards! The path that I have to get to ROOT IIS://IT-SERVER.company.local/LM/W3SVC/1/ROOT but I don't see an OWA directory. Could this be the problem? Am I suppose to see the OWA directory here? I'm not sure if this would be of much use, but here are the contents of my ROOT directory Key Type AppFriendlyName AppRoot AppIsolated Path AuthFlags DirBrowserFlags DefaultDoc HttpErrors AccessFlags AccessSSLFlags NTAuthenticationProviders AspScriptErrorSentToBrowser AspSession Timeout AspAllowSessionState AppPoolID

I came across this thread. But I really don't think it has to do with corruption. The CAS is doing something during the install that isn't correct. http://social.technet.microsoft.com/Forums/en/exchange2010/thread/f7c00667-21a9-44fe-9c0d-d74b2ea16eb3 Did you gave a try downloading the new Exchange SP1 file and than installing it? If the issue still exist than i would recommend you to uninstall IIS and re install it. Once it's done, start the installation again. Post the update. Gulab | MCITP: Exchange 2010-2007 | Lync Server 2010 | Windows Server 2008 | Skype: Exchange.Ranger | Blog: www.ExchangeRanger.Blogspot.com I didn't find what Rowen suggested, so at this point I think I am going to re-install IIS.

Hi Berry, Please update the result here after your re-install IIS. Thanks.Best Regards!