Solution for Skype missing from windows system tray icons

Solution for Skype icon missing from sys tray

1. Make sure you open the option
Options Advanced settings: Keep Skype in the taskbar while I'm signed in

2. Fix IconCache database
1) Open a command prompt (Start->Run cmd)
2) Kill the explorer.exe task from Task Manager
3) In command prompt, issue the following commands:
--> CD /d %userprofile%\AppData\Local
--> DEL IconCache.db /a
--> Explorer