Hi Waseem,
Thanks for using the Broadcom Community!
Starting with the upgrade to SEPM 14.3 RU10 Build 27659, we added a mandatory client password requirements to improve the security of our product. One of these changes was to remove the ability to disable the client password requirement in the Symantec Endpoint Protection Manager.
As per the discussion in this forum and concerns raised to Broadcom Support, this specific change has been reverted and we have released a new SEPM 14.3 RU10 (Refresh) version (Build 27665) on April 8th to restore this ability.
Kindly upgrade to the latest SEPM 14.3 RU10 (Refresh) version (Build 27665) to be regain the option to remove the mandatory client password.
Once removed, try to reinstall our product again.
For more information see the latest release notes:
https://techdocs.broadcom.com/us/en/symantec-security-software/endpoint-security-and-management/endpoint-protection/all/release-notes/Whats-new-for-Symantec-Endpoint-Protection-14-3-RU10.html
Let me know if you need anything else.
Best,
Russ_V