Don't try to reach out to direct conda path in windows.

src/main/java/fiji/plugin/trackmate/util/cli/CLIUtils.java

@@ -31,15 +31,18 @@ public class CLIUtils
 
  public static final String CONDA_PATH_PREF_KEY = "trackmate.conda.path";
 
- public static String CONDA_COMMAND = "conda";
-
  public static Map< String, String > getEnvMap()
  {
  // Create a map to store the environment names and paths
  final Map< String, String > envMap = new HashMap<>();
  try
  {
- final Process process = Runtime.getRuntime().exec( getCondaPath() + " env list" );
+ final ProcessBuilder pb;
+ if ( IJ.isWindows() )
+ pb = new ProcessBuilder( Arrays.asList( "cmd.exe", "/c", "conda", "env", "list" ) );
+ else
+ pb = new ProcessBuilder( Arrays.asList( getCondaPath(), "env", "list" ) );
+ final Process process = pb.start();
  final BufferedReader reader = new BufferedReader( new InputStreamReader( process.getInputStream() ) );
 
  // Read each line of output and extract the environment name and
@@ -76,6 +79,9 @@ public static List< String > getEnvList()
 
  public static String getCondaPath()
  {
+ if ( IJ.isWindows() )
+ return "conda";
+
  final PrefService prefs = TMUtils.getContext().getService( PrefService.class );
  String findPath;
  try