Starting with ASDM 7.18, Cisco officially discontinued support for Java Web Start. This change was driven by Oracle's end-of-life for JRE 8 and the JNLP protocol. Administrators must now use the ASDM Launcher for all local connections.
If the ASDM image is already stored on your firewall's flash memory, you can download the launcher directly from the device's web interface: Release Notes for Cisco Secure Firewall ASDM, 7.18(x) cisco asdm 718 download top
Fully supported on Windows 10, 11 , and macOS 10.4 or later. Starting with ASDM 7
Select and choose version 7.18(x) .