Hi,I would like to install Hub and Client Access role (Exchange 2007 sp1) on the same server. The server is Windows 2008, 64 bit.The setup failed with Invalid URI: The hostname could not be parsed.The application log:Product: Exchange ID: 4999 Source: MSExchange Common Version: 8.0 Symbolic Name: ExchangeCrash Message: Watson report about to be sent to dw20.exe for process id: %1, with parameters: %2, %3, %4, %5, %6, %7, %8, %9, %10. ErrorReportingEnabled: %11 The Install-ClientAccessRole log :# Tasks for 'OWA Configuration' component# [ID = 8aeef887, Wt = 1, isFatal = True] "Configuring Outlook Web Access for Client Access role."New-OabVirtualDirectory -DomainController $RoleDomainControllerI ran the New-OabVirtualDirectory -DomainController $RoleDomainController command manually with -verbose option.The result:[PS] C:\Users\administrator.MTI\Desktop>New-OabVirtualDirectory -DomainController $RoleDomainController -VerboseVERBOSE: New-OabVirtualDirectory : Beginning processing.VERBOSE: New-OabVirtualDirectory : Administrator Active Directory session settings are: View Entire Forest: 'False',Default Scope: 'mti.org', Configuration Domain Controller: '<DC FQDN>',VERBOSE: New-OabVirtualDirectory : Searching objects "<the host FQDN>" of type "Server" under the root "$null".VERBOSE: New-OabVirtualDirectory : Previous operation run on domain controller '<DC FQDN>'.WARNING: An unexpected error has occurred and debug information is being generated: Invalid URI: The hostname couldnot be parsed.New-OabVirtualDirectory : Invalid URI: The hostname could not be parsed.At line:1 char:24+ New-OabVirtualDirectory <<<< -DomainController $RoleDomainController -Verbose Can you please help me? Thanks,

Check out http://technet.microsoft.com/en-us/library/bb123735(EXCHG.80).aspx it seems to me as if not all the required parameters are used and / or the given domaincontroller can not be contacted / resolved corectly.

Clarify: Unable to install CAS/HT server, right? Troubleshooting: 1. Based on your error, please check user's MSExchHomeServerName attribute, if it has been set improperly, similar error will occur a. Launch ADSIEditor <Start->Run->adsiedit.msc> b. Expand Domain->locate a user->right-click it and choose Properties c. Check MSExchHomeServerName attribute Correct format: /o=<Org Name>/ou=<Administrative Group Name>/cn=Configuration/cn=Servers/cn=<Server Name> 2. Please describe your current environment, only a MBX server? Is there any other applications have been installed on the any other servers besides those system required applications?

1. I checked user's MSExchHomeServerName attribute:All user attribute are MSExch2003 server name with correct format. 2. Now, MsExch2003 server works correctly in the domain. The Exch2007 system contains 4 servers. 2 server are MBX role in CCR. 2 server are CAS/HUB role with NLB. Servers are dedicated on the Exch2007 roles. I didn't install any other application on the servers.I tried the next power shell cmdlet:New-OabVirtualDirectory -InternalUrl http:\\<server FQDN>The Offline Address Book Virtual Directory is created correctly.But the installation has failed:Server "<server FQDN> alredy has an offline address book (OAB) virtual directory "<servername>/OAB (Default Web Site". Each server can only have one OAB virtual directory. Remove the existing virtual directory using Remove-OABVirtualDirectory, and then try again.

Hi. i have had tha same problem for two days.... i found a way to fix it.I have removed the Network Load Balancing Feature on Windows 2008, an after that Exchange Installation is executed normally.Now, i 'll try to add again the NLB feature.I hope it could helps.

Alberto - That worked for me too! Thanks for the idea!

Alberto , that worked also for me. Thank´s a lot.