Can you provide a little more information about what you have done and haven't done?
Have you set up Splunk to consume your logs? If so, how did you do that?
Splunk is mostly independent on versions of software as long as the log files are still txt files which can be consumed by Splunk.
For example, if you install Splunk, and configure Splunk to point to your IIS logs, it should recognize them for what they are (unless you use custom logging format), and digest them.
Brian
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