diff --git a/build/windows/config.xml b/build/windows/config.xml
index 3e2ff39e7..72640978b 100755
--- a/build/windows/config.xml
+++ b/build/windows/config.xml
@@ -37,7 +37,10 @@
     -->
   </classPath>
   <jre>
-    <path>java</path>
+    <!-- launch4j does not detect Adoptium, so add %PATH% as fallback -->
+    <!-- https://sourceforge.net/p/launch4j/bugs/197/ -->
+    <!-- https://github.com/processing/processing4/issues/667 -->
+    <path>java;%PATH%</path>
     <!-- Make it possible access JavaFX and JOGL libraries for Tools,
          Modes, etc. Not recommended, but making it possible because
          some Tools rely on JavaFX. (OpenGL is only incidental.) -->
diff --git a/todo.txt b/todo.txt
index e821f458b..9f24b35fe 100755
--- a/todo.txt
+++ b/todo.txt
@@ -24,6 +24,11 @@ X move ExportDialog to processing.app.ui (out of Java Mode) so it can be used by
 X move isXcodeInstalled() methods from JavaBuild into MacPlatform
 X add activateIgnoringOtherApps() to ThinkDifferent
 
+_ Exported project to Windows cannot find Java
+_   https://github.com/processing/processing4/issues/667
+
+_ exporting application while still running on Windows
+_   just says "Error during export" rather than something more useful about deleting dir
 
 manager
 _ if contrib (library only?) folder name changes on update, old lib not removed