How do I audit failed logon attempts in my 2008 R2 active directory

There is a tool from Microsoft called Account Lockout Status. A simple Google search will turn it up for you. This tool will not only display the number of bad password attempts for a specific user, it will also tell you which domain controller recorded the bad password attempts. There is another tool that comes with this called EventCombMT. This is a very invaluable tool. Instructions on how to use this tool are located here:

http://dougg.co.nz/2013/04/23/using-eventcombmt-with-2008-r2-to-find-what-is-locking-accounts/

With this, you can go through any one of the event viewer logs on any domain controller (or number of domain controllers) at one time with one click. The results will be output to a text file. This is unequivocally my go to for this type of issue. If there is anything else I can do, please let me know. Thanks!

Also, as a side note, don't forget that you an assign actions to events on each domain controller. Put another way, if an audit failure is recorded, assign an action to that error and set it to email you each time it occurs (just an example of one of the actions).

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