Tags: Debugging

Recreate Event Viewer logs

Benjamin Perkins Windows

If you ever receive “the event log file is corrupted” on Windows 2008 R2, try the following list of actions to fix it. Following these steps result in the recreation of the event logs. Open a command as an Administrator and enter “NET STOP EVENTLOG” as shown in Figure 1. Figure 1, stopping event logging […]

Read More →

Could not load type “Namespace.Class” from assembly “Namespace”

Visual Studio Benjamin Perkins

I have been working hard learning the new features of ASP.NET 4.5, specifically using the following methods: HttpResponse.BeginFlush HttpResponse.EndFlush Stream.ReadAsync HttpRequest.GetBufferedInputStream HttpRequest.GetBefferlessInputStream Stream.BeginRead Stream.EndRead All of which need to be implemented using either a handler or module, if you want to use them in IIS. Can’t say that I did this a lot in the […]

Read More →

Why does my !runaway command not work

WinDbg Benjamin Perkins

Sometimes when I execute: !runaway in WinDbg I receive the following error: ERROR: !runaway: extension exception 0x80004002. “Unable to get thread times – dumps may not have time information” The error message says it all, but how do you fix it. In my case ProcDump was used to create the dump and it appears that […]

Read More →

Recycling a worker process due to deadlock

IIS Benjamin Perkins

There are many reasons why an IIS worker process can hang. For example, a long running SQL query, searching through a Dictionary object, a non-optimal Regex command, hitting the limits of the process model configuration, etc… can all cause performance to slow. Previously, I wrote a blog about using the !dtc command in WinDbg. This […]

Read More →

IIS Service will not start (Event Id 4275)

IIS Benjamin Perkins

When you are troubleshooting IIS issues there are tools like Failed Request Tracing, IIS logs, etc. which will let you see what is going on. But what do you do when IIS itself is not working? A common cause is that the applicationHost.config file is corrupted. Perhaps there was a manual modification made to it […]

Read More →

Enable and Activate Failed Request Tracing Rules

IIS Benjamin Perkins

There is a new troubleshooting capability available in IIS 7, it is called Failed Request Tracing Rules. It provides a lot of very useful information which can help pinpoint the cause of performance problem or error. At the moment it is not installed by default and you may see the setting as shown in Figure […]

Read More →