Distributed Services Support Team

Scenario: A WCF service hosted in IIS that is invoked from another WCF service or ASP.NET application hosted in IIS on the same machine, throws the following error: "The HTTP request is unauthorized with client authentication scheme 'Ntlm'. The authentication Read More...

Problem Description You have a COM+ server application. The application is set to run as a particular user. After working for sometime on Windows Server 2008 the application may stop working and keep failing. Unless you restart the COM+ application, it Read More...

SYMPTOMS A COM+ application that uses Oracle 9i fails intermittently on Windows 2003 Service Pack 2. The application logs the follow error in the event log: Event Type:     Error Event Source:  ************ Event Category:          Read More...

SYMPTOMS   Intermittently MSDTC 4156 error message with RPC_S_INVALIDA_ARG in the event details is logged in the event log when MSDTC is configured with Mutual Authentication not required. Event Type: Error Event Source: MSDTC Event Category: CM Read More...