IIS 8 - 500 server error logs

36
votes

I have a desktop application that makes a call to an asp page on the web server. The web server is currently returning a 500 server error and I cannot figure out how to get more detail.

There doesnt seem to be anything in the Event Viewer: Windows Logs->application.

Is there a setting I can make or another place I can find logs? Seems like this would be a typical issues but I cannot find any information on this.

(Also, the stack trace does not come through to the client application)

2
asp.netiislogging
Do you have administrator rights on the server hosting the web page? If so, then the event viewer->app log on the server is absolutely the place to go. Forget about the client app completely. - Lynn Crumbling

2 Answers

47
votes

You can enable "trace logging" on IIS Manager. It fill create bunch of XML files you can easily investigate using IE installed on the server. (other browsers may fail to process xslt style files)

From Technet:

  1. Open IIS Manager and navigate to the level you want to manage. For information about opening IIS Manager, see IIS 7.0: Open IIS Manager. For information about navigating to locations in the UI, see IIS 7.0: Navigation in IIS Manager.
  2. In the Connections pane, click Sites.
  3. In Features View, select the site for which you want to enable trace logging.
  4. In the Actions pane, under ``Configure, click Failed Request Tracing.
  5. In the Edit Web Site Failed Request Tracing Settings dialog box, select Enable to enable logging for this site.
  6. In the Directory text box, type the path where you want to store the log files or click the browse button (...) to find a location on the computer. The default is %SystemDrive%\inetpub\logs\FailedReqLogFiles.
  7. In the Maximum number of trace files text box, type the maximum number of trace log files that you want to keep, and then click OK.

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PS: don't bother IIS 7.0, almost same as IIS 8.x

18
votes

This should be a comment but comments don't let me add an image.

This is a screenshot of Matt Browne's comment. Upvote his comment if you find this helpful.

If you don't see the "Failed Request Tracing Rules" button, then you need to enable "Tracing" tracing in Server roles.

Here it is:

enter image description here

There is also this configuration that needs to be set:

enter image description here