Android mode doesn't work

[chrmoeller]

Tried everything I found - but android-mode doesn't work. Processing is repeating the following error-message every few seconds:

Problem inside Devices.list()
java.io.IOException: Cannot run program "adb": CreateProcess error=2, Das System kann die angegebene Datei nicht finden
at java.lang.ProcessBuilder.start(ProcessBuilder.java:1048)
at java.lang.Runtime.exec(Runtime.java:620)
at java.lang.Runtime.exec(Runtime.java:485)
at processing.app.exec.ProcessHelper.execute(ProcessHelper.java:84)
at processing.app.exec.ProcessHelper.execute(ProcessHelper.java:64)
at processing.mode.android.AndroidSDK.runADB(AndroidSDK.java:371)
at processing.mode.android.Devices.list(Devices.java:292)
at processing.mode.android.Devices.refresh(Devices.java:239)
at processing.mode.android.Devices.findMultiple(Devices.java:184)
at processing.mode.android.AndroidEditor$UpdateDeviceListTask.run(AndroidEditor.java:83)
at java.util.TimerThread.mainLoop(Timer.java:555)
at java.util.TimerThread.run(Timer.java:505)
Caused by: java.io.IOException: CreateProcess error=2, Das System kann die angegebene Datei nicht finden
at java.lang.ProcessImpl.create(Native Method)
at java.lang.ProcessImpl.(ProcessImpl.java:386)
at java.lang.ProcessImpl.start(ProcessImpl.java:137)
at java.lang.ProcessBuilder.start(ProcessBuilder.java:1029)
... 11 more

I installed the latest JDK, the Android SDK, downloaded every package inside the SDK the manager suggested, I set all the System-Path-variables on my Windows-10-64-Machine - but nothing helped: The error-message is being repeated and repeated and repeated. Frustrating. Any hint for a suitable help? I would thank a lot...