resetpass.bat only works if the SEPM database is on the same machine (embedded or local SQL Express). If your DB is on a separate SQL server, you must use SQL Management Studio to update the SEM_USER table manually (a complex procedure not covered by simple batch files).
This article will explain exactly what this batch file is, where to get it legitimately, how it works, and why you should avoid shady "free download" sites.
The resetpass.bat tool is a legacy utility used to reset the Symantec Endpoint Protection Manager (SEPM) admin password to its default value ().