I had a problem that one of our development machines had been configured in a ‘Least Privileges’ configuration – and it was a bit too least. The content app pool could not write to the logs. OWSTimer and WebAnalytics both could, but there was nothing from W3WP for that web app.

Just a reminder to myself…

Well, the solution was to add the app pool account to the ‘Performance Log Users’ group in AD. You find it under BUILTIN. Reset ISS. Voila!