Hi There, I had the same issue, to fix it, go to c:\program files\splunk\etc\apps\SA-ldapsearch\local and delete all the contents.
Then in the web console, go to apps and manage apps, the install from zip file, then browse for splunk-support-for-active-directory_214.tgz, making sure to tick the upgrade app button.
This will recreate the files you deleted from the local directory but crucially, you are without a default configuration.
You are now able to create the default configuration with the updated password. hope this helps?
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