Incase you are running 11.x SEPM
To reset the administrator password
- Open Windows Explorer on the computer that runs Symantec Endpoint Protection Manager.
- Locate the Drive:\Program Files\Symantec\Symantec Endpoint Protection Manager\Tools folder.
- Double-click resetpass.bat.
The user name and password are reset to admin.
- Log on to Symantec Endpoint Protection Manager using admin for both the user name and the password, and change the password.
Incase you are running 12.x SEPM
you can reset with forgot option. Below article guide you
https://www-secure.symantec.com/connect/articles/how-reset-symantec-endpoint-protection-manager-console-password-sep-121
For resetpass tool contact with symantec support
To Receive resetpass.bat file, you could log a case with Symantec Technical Support.
How to create a new case in MySupport
http://www.symantec.com/docs/TECH58873
OR
Phone numbers to contact Tech Support:-
Regional Support Telephone Numbers:
- United States: https://support.broadcom.com (407-357-7600 from outside the United States)
- Australia: 1300 365510 (+61 2 8220 7111 from outside Australia)
- United Kingdom: +44 (0) 870 606 6000