The IObjectControl::Activate() method failed – Error Code = 0x800a01a8

  My customer was migrating from Windows 2003 to Windows 2012 R2. Part of the application still ran classic ASP and VB6 COM+ components in IIS. Their COM+ component requires ASP sessions state so IISIntrinsics was enabled for the component. However, in the new Windows 2012 R2 environment, when the VB6 component requested a value…

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SSL HandShake ClientHello receives Encrypted Alert

My customer recently ran into a problem worth recounting. He had several machines which had a WCF application which made a secure SSL connection to a remote Web Service. However, a new set of machines built could not connect to the same endpoint using SSL. The new machines received the error: Could not create SSL/TLS…

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Simple WSE Routing Sample for Classic SOAP Service

    A customer came to me recently asking about options to migrate a set of SOAP services hosted on Windows 2003 into two new modern datacenters running Windows 2012. The most critical requirement for the customer was that the client remain unaware of the change and client proxies could not be modified. We decided…

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Implement a UserNamePasswordValidator for WCF Service hosted in IIS

Recently I was working with a customer to implement a custom UserNamePasswordValidator for his WCF application. You can download a sample on this topic and others from Windows Communication Foundation (WCF) and Windows Workflow Foundation (WF) Samples for.NET Framework 4. Although the WCF sample works perfectly you may run into problems transferring the solution to a…

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A performance consideration for AppFabric Session State Provider for ASP.NET and IHttpHandlers

By default a class which implements the IHttpHander interface does not have access to the Http Session context. For the IHttpHander to gain access to the session, it must implement the IRequiresSessionState or IReadOnlySessionState Interface. However, recently I came across a condition where my customer’s IHttpHander was pulling the AppFabric cache for the users http…

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Learn to use the PowerShell cmdlet for testing the Microsoft Distributed Transaction Coordinator (MSDTC)

The following article assume the following:         1. You have no firewall between the server and client or it has been disabled or configured to allow for DTC traffic to occur.         2. The authentication scheme for DTC is supported by both server and client.         3. The tester is running as system administrator with…

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