:
"$error.Clear(); 
          . "$RoleInstallPath\Scripts\Update-AppPoolManagedFrameworkVersion.ps1" -AppPoolName:"MSExchangeAutodiscoverAppPool" -Version:"v4.0";
          get-AutodiscoverVirtualDirectory -server $RoleFqdnOrName | set-AutodiscoverVirtualDirectory -WSSecurityAuthentication:$true -OAuthAuthentication:$true
        ":""

Hi,

First, I recommend you use the Get-ServerHealth cmdlet to return health information related to the server you specify.

Here is a article for your reference:

Get-ServerHealth
http://technet.microsoft.com/en-us/library/jj218703(v=exchg.150).aspx

Besides, please check if there is any related error in setup log.

Best regards,
B