When opening Cisco ASDM-IDM Launcher you get an error that says, “Windows cannot find ‘javaw.exe’.
Solution
Add the path to the java installation in the PATH environment variable. For me the path was C:\Program Files\Java\jre1.8.0_121\bin but obviously it can be different depending on the Java version & your environment.
Location of the path can be found under control panel-->Advanced user settings, enviornment variables--> PATH. add ;C:\Program Files\Java\jre1.8.0_121\bin if there is already anothe variable set.