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Outlook password prompt RPC issue

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  • Outlook password prompt RPC issue

    Hi All.

    i have two separate domains and one exchange server in one of the domains. There is a trust relationship between both domains.

    the remote site on the separate domain is having issues connecting to exchange in the other domain where outlook is continually prompting for user and password.

    I can logon fine using webmail and outlook appears to work even though the password box appears.

    I have run the exchange connectivity test for a user in both domains. i get a pass for the domain that contains the exchange server and get the following issue from a user in the remote site.

    Attempting to ping RPC proxy
    RPC Proxy can't be pinged.

    i also get the following logged error on the exchange server.

    Security ID: NULL SID
    Account Name: -
    Account Domain: -
    Logon ID: 0x0

    Logon Type: 3

    Account For Which Logon Failed:
    Security ID: NULL SID
    Account Name: USERNAME
    Account Domain: REMOTEDOMAIN

    Failure Information:
    Failure Reason: An Error occured during Logon.
    Status: 0xc000005e
    Sub Status: 0x0

    Process Information:
    Caller Process ID: 0x0
    Caller Process Name: -

    Network Information:
    Workstation Name: PC01
    Source Network Address: x.x.x.x
    Source Port: 54968

    Detailed Authentication Information:
    Logon Process: NtLmSsp
    Authentication Package: NTLM
    Transited Services: -
    Package Name (NTLM only): -
    Key Length: 0

    Using exchange connectivity tester for autodiscovery lookup also fails for the remote domains user which is odd.

    The Microsoft Connectivity Analyzer is attempting to retrieve an XML Autodiscover response from URL user [email protected]
    The Microsoft Connectivity Analyzer failed to obtain an Autodiscover XML response.

    Additional Details
    An HTTP 401 Unauthorized response was received from the remote Unknown server. This is usually the result of an incorrect username or password. If you are attempting to log onto an Office 365 service, ensure you are using your full User Principal Name (UPN).
    Headers received:
    Content-Type: text/html
    Server: Microsoft-IIS/7.5
    WWW-Authenticate: Negotiate,NTLM,Basic realm=""
    X-Powered-By: ASP.NET
    Date: Tue, 27 Aug 2013 13:08:23 GMT
    Content-Length: 58

    Any help would be appreciated.
    Last edited by mordzy; 27th August 2013, 14:14.