If you encounter ikvm--v1.69.21.0x0.jar on your system or in a download source:
: Connection failures often stem from the JAR being unable to communicate over the default iKVM port (typically ). Ensure this port is open on your firewall. Manual Launching
Version V1.69.21 is generally recognized as a stable version that successfully fixes virtual media storage issues (mounting ISOs) that were broken in 1.69.20.
For comparison, here are IKVM artifacts:
It is theoretically possible someone compiled IKVM from source (which does contain Java code for the class libraries) and packaged it incorrectly. But the version number 1.69.21 does not map to any public tag or branch in the official IKVM GitHub repository.