IIS 7.5 Logging – How to Include Milliseconds in Time Field

iisiis-7.5logging

Currently, my IIS log looks like this (using W3C logging):

2012-02-15 00:31:50 W3SVC1 ...

Is there a way to include milliseconds, such as:

2012-02-15 00:31:50.123 W3SVC1 ...

Best Answer

If you have no problem with an alternative logging provider, simply download, install, enable and configure the Advanced Logging extension to IIS 7 and 7.5

The standard definition of the UTC time stamp, is in the format: HH:MM:SS.sss just as you want.

For more information on the Advanced Logging feature and how to configure it, read this blog post

With the built-in W3C extended log format: No!

Though I can't possibly know that. The only thing I know, is that the official W3C standard draft specifies that the time field is NOT of the same type as the time-taken field (which does include milliseconds).

They are of the types <time> and <fixed>, respectively, and I wouldn't be surprised if Microsoft hardcoded the formats, since the draft allows for some freedom to choose how accurate an implementation should be (just HH:MM would be considered a valid <time> format)

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