Here is the helpful guide on how to download and install it safely.
Security & Encryption: Installs necessary security and certificate-related components required for authentication or e-signing. nsdlssusersetup200 download link
NSDL SPEED-e Service: The NSDL e-Services Downloads page contains various utilities like the e-Lock Client Set-Up and offline signing tools. Here is the helpful guide on how to
Browser Compatibility: Many older NSDL setups perform best on Microsoft Edge utilizing Internet Explorer (IE) compatibility mode. nsdlssusersetup200 download link