Last Friday, Xiao Dong, Bryan and Wei worked out one interesting Biztalk issue, which got resolved by workaround one Oracle client software limitation. ORA-12154: TNS:could not resolve the connect identifier specified when calling System.Data.OracleClient...

BSTR is not like a common value type, to use it, it must be allocated and freed explicitly, otherwise will cause various memory leaking problems. There is one case I worked before, I’d like to use it explain how we found out an improper implementation...

This time we will talk about a very strange deadlock problem. Customer has an ASP.NET 2.0 application running on IIS 6. This application hangs randomly. We collected hang dumps to investigate, here are the interesting findings. Based on the result...

Recently I got several calls from customers or internal about how MSDTC clients talks to MSDTC Cluster, this decides how to configure the firewall between them. As we know, as a cluster resource, MSDTC has its virtual name and virtual IP address...

Thread local storage (TLS) is useful for application to store thread specific data. It is like most system resources (for example, Security Token leakage issue mentioned by Wei Zhao), we must balance the alloc and free behavior in time, otherwise it will...

Recently, we have a problem about compression in IIS 7 . IIS keeps returning un-compressed content even enabled compression for static types. If we look at the temp compression file folder (By default, it is C:\inetpub\temp\IIS Temporary Compressed Files...

Many IIS users remember that we ship a small web application named IISADMPWD with older versions of IIS (for instance, IIS 5, and IIS 6). This application is actually a useful utility for domain users to change passwords. You may wonder why this application...

We got several similar cases in the past two months about security token leak in customer’s ASP.NET application. All these cases are related to Impersonate . Usually, user will noticed the whole server performance is down, and may found event 2020 in...

Customer has a 3rd party security scanning tool that is complaining that IIS6 is revealing its internal IP address in HTTP responses. The customer already has KB 834141 configured and installed. We found that it is due to some ISAPI filter configured...

I recently worked on a Web Service installation case in IIS7. It may help guys who are planning to migrate from IIS6 to IIS7. Symptom ======== Customer has a web service installation files complied by vs.net 2005. It was used to run on...

As we know, there are some good articles discussing about deadlock detection in action: Advanced Techniques To Avoid And Detect Deadlocks In .NET Apps http://msdn.microsoft.com/zh-cn/magazine/cc163618(en-us).aspx contextSwitchDeadlock ...

Welcome! This is a new blog for the Microsoft “Developer Support for Internet” Team (Asia region). The whole team locates in ShangHai, China. Resolving various technical issues for Premier and Profession customers is our job, enhancing customers...