How to Sign Into Two or More Skype Accounts at Once in Windows

To launch a second Skype application on Windows, press Windows Key + R to open the Run dialog, copy-paste the below command into it, and press Enter.

On a 64-bit version of Windows

"C:\Program Files (x86)\Skype\Phone\Skype.exe" /secondary

On a 32-bit version of Windows

"C:\Program Files\Skype\Phone\Skype.exe" /secondary

You can create shortcut also, so you don't need to repeat the same command again and again