to find specific versions like JMRI 4.24 (the final production release of 2021). Security Warning: Be cautious of any file named decoderprosave.exe
If you see any of these, run a full scan with or Malwarebytes . i decoderprosaveexe 2021
If you need a “decoder” program (video, audio, or data): to find specific versions like JMRI 4