In a production environment, if customer sets Exchange OWA (Outlook Web Access) behind some external portal, after sign in the web portal, when access the OWA, most users don’t like re-type user name and password. We call this requirement as OWA SSO ...

Symptom =========== Customer built an ASP.NET web application using Visual Studio 2008 on Windows 2008. In the source code, it called a function which was imported from native c++ dll: [The source code looks like below] public partial...

Symptom: To reproduce the issue: 1. Install “2007 Office System Driver: Data Connectivity Components” in order to open the new Access 2007 .accdb database file. http://www.microsoft.com/downloads/details.aspx?familyid=7554F536-8C28-4598-9B72...

COM Interop is a technic for calling an unmanaged COM component from a .NET application, please refer to http://msdn.microsoft.com/en-us/magazine/dvdarchive/cc163494.aspx to learn how to implement it. DllCanUnloadNow is an important function which should...

Customer has an IIS 6.0 with SMS installed. When access one of the SMS virtual directory, IE showed “page cannot be displayed” error with a button asking you to troubleshoot connection problem. There was no entries logged in IIS log, however we...

Symptom: According to the dump file, there are dozens of application domains for one asp.net web application. Troubleshooting: Asp.net starts new appdomain and unloads old one in various scenarios, for example: · Machine.Config, Web.Config...

Symptom: When clicking “Add/Remove Windows Components” in control panel, it shows error “setup was unable to load the master information file” and rejects further action. Troubleshooting: This error occurs when master information file %windir...

In my previous post, I give one sample on how to use Powershell to filter and categorize information from thousands of IIS7 FREB log files . Here is another sample to quickly find out useful information from .NET fusion log with PowerShell. Here...