K2 Workspace 404 Not Found Error

By Hristo Yankov

In the process of a K2 installation, no matter distributed or on a single server, you have to setup the K2 Workspace. It is mostly well covered by the K2 Getting Started (Installation) documentation.

However, even if you follow strictly the instructions, you might get a 404 (Not Found) error when trying to access your Workspace. The following is a step by step guide on how to troubleshoot this error.


So you open your K2 Workspace and you are greeted by a 404 (Not Found) error. First thing you need to do is enable the logging of your K2 workspace web site. You can do that by running IIS Manager, navigating to Web sites, locating your K2 website, right clicking on it, selecting Properties from the context menu. It will open the properties of your web site. Navigate to the Web Site tab. There is a checkbox called 'Enable Logging'. Check it, and just in case do 'iisreset'. Make a note of where the log is stored. It is usually in a C:\WINDOWS\system32\LogFiles\ folder.

Open your K2 Workspace site again, so the error is logged. Then navigate to the log folder and open the log file. You should see entries similar to:
YYYY-MM-DD HH:MM:SS W3SVCXXXX XX.XX.XX.XX GET /Workspace/default.aspx - 80 Domain\User XX.XX.XX.X long-client-description-entry-here 404 2 1260

The most important part of this error log is the error code. It is "404 2 1260". 404, not found, could be caused by a couple of reasons. It is the "2" and "1260" part of this entry that specify what exactly it is. If you refer to this URL you will see that '2' stands for "Web service extension lockdown policy prevents this request." Basically, you have a policy, which is preventing the server from hosting the file.

Now, how to fix that? Go back to the IIS Manager and right click on the "Web Service Extensions" folder. From the context menu select "Allow all Web service extensions for specific application...".


Then from the pop up window select ASP.NET v2.0 and click ok. iisreset and you should be fine.


If your error is not 404 x 2, but something else, the URL above should give you a hint on the root cause.

In the case of 404 x 2, this will fix your problem, but you might want to experiment with the Web Service Extensions policies, in order to achieve higher security level.