Your skype crashed when you were on Windows VM?It disapeared of your toolbar, and you can’t connect with another session?

Easy to fix… You just need to kill the process.

Step #1 – Find the process PID (Process ID)

Use ps command
ps aux | grep skype

nelle@nelle-laptop:~$ ps aux | grep skype
nelle     4882  1.5  1.0  95052 20104 ?        Sl   08:45   3:52 skype
nelle    15325  0.0  0.0   3340   816 pts/1    S+   12:47   0:00 grep skype

The process number is 4882

Step #2 – Kill the process

Last thing to do, kill the process

kill 4884

You can run your program again!