I am running the Trial version. I tried to setup transactions to sites that use "pass through authentication" and SEUM kept locking my domain account out. This was from a recording from both my laptop then i moved to a recording from the remote server that was performing the transactions. Seemed that something else strange was going on as well. as I deleted the monitor and restarted the SEUM service on the remote server but I was still gettting locked out. I had to shutdown the service all together.
I believe the issue you're encountering is related to the Windows Integrated pass-through authentication. This has been documented in the following KB article. I recommend logging into your machine using a local (non-domain) credentials when creating the recording. An alternative is also provided in the KB below.
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