DLS 2002 was designed for Windows XP and Windows 7. You may need to run the installer in Compatibility Mode on Windows 10 or 11.
The only safe and legal way to download this software is through or via a licensed DSC distributor. dsc dls 2002 download software link
Ethical and practical note
Regional security equipment wholesalers often provide the software on their resource pages for registered customers. DLS 2002 was designed for Windows XP and Windows 7
to encrypt all account data. This stamp must be identical across all networked installations to share accounts. System Requirements & Compatibility dsc dls 2002 download software link