Error Exchange Server 2010 SP3 Upgrade - OWA Already Exists - Event ID 1002

Hi,

I have a problem with my Exchange 2010 SP1 deploy in Windows server 2008 R2,

I try upgrade to Exchange 2010 SP3, an error happened when step progress CAS role

Error:
The following error was generated when "$error.Clear(); 
          $InternalOwaUrl="https://" + $RoleFqdnOrName + "/owa";
          new-OwaVirtualDirectory -DomainController $RoleDomainController -InternalUrl $InternalOwaUrl;
          get-OwaVirtualDirectory -server $RoleFqdnOrName -DomainController $RoleDomainController | where {$_.OwaVersion -eq "Exchange2010"} | set-OwaVirtualDirectory -WindowsAuthentication $true;
        " was run: "The virtual directory 'owa' already exists under '(Server Name)/Default Web Site'.
Parameter name: VirtualDirectoryName".

The virtual directory 'owa' already exists under '(Server Name)/Default Web Site'.
Parameter name: VirtualDirectoryName
Click here for help... http://technet.microsoft.com/en-US/library/ms.exch.err.default(EXCHG.141).aspx?v=14.3.123.3&e=ms.exch.err.Ex88D115&l=0&cl=cp

Error:
The following error was generated when "$error.Clear(); 
          $InternalOwaUrl="https://" + $RoleFqdnOrName + "/owa";
          new-OwaVirtualDirectory -DomainController $RoleDomainController -InternalUrl $InternalOwaUrl;
          get-OwaVirtualDirectory -server $RoleFqdnOrName -DomainController $RoleDomainController | where {$_.OwaVersion -eq "Exchange2010"} | set-OwaVirtualDirectory -WindowsAuthentication $true;
        " was run: "The virtual directory for the mini version of Outlook Web App can't be found in the same Web site.".

The virtual directory for the mini version of Outlook Web App can't be found in the same Web site.
Click here for help... http://technet.microsoft.com/en-US/library/ms.exch.err.default(EXCHG.141).aspx?v=14.3.123.3&e=ms.exch.err.Ex88D115&l=0&cl=cp

I already try delete owaVirtualDirectory from adsiedit, Exchange management console, and from IIS manager but still it say virtual directory 'owa' already exists in my server.

Can anyone help me how resolve this problem?

Thanks.

 

Best Regards,

Henry Stefanus