src/java.desktop/windows/native/libawt/windows/awt_Taskbar.cpp

*** 56,66 ****
--- 56,70 ----
   * Signature: (JI)V
   */
  JNIEXPORT void JNICALL Java_sun_awt_windows_WTaskbarPeer_setProgressValue
    (JNIEnv *, jobject, jlong window, jint value)
  {
+     if (value < 0 || value > 100) {
+         m_Taskbar->SetProgressState((HWND)window, TBPF_NOPROGRESS);
+     } else {
          m_Taskbar->SetProgressValue((HWND)window, value, 100);
+     }
  }
  
  
  
  /*
*** 86,95 ****
--- 90,102 ----
      if (valueNative) {
          if (strcmp(valueNative, "OFF") == 0) {
              flag = TBPF_NOPROGRESS;
          } else if (strcmp(valueNative, "NORMAL") == 0) {
              flag = TBPF_NORMAL;
+ 
+             // Switching from TBPF_INDETERMINATE to TBPF_NORMAL has no effect
+             m_Taskbar->SetProgressState((HWND)window, TBPF_PAUSED);
          } else if (strcmp(valueNative, "PAUSED") == 0) {
              flag = TBPF_PAUSED;
          } else if (strcmp(valueNative, "INDETERMINATE") == 0) {
              flag = TBPF_INDETERMINATE;
          } else if (strcmp(valueNative, "ERROR") == 0) {