Skype Install error appears during the installation

Hi experts,
I have this error when I want to make the necessary updates for Skype. I tried auto updated and also I tried to install the updates manually and every time I had this error. Why I cannot install the updates ? What could be the problem with my PC and please help me to update Skype.
Thank you experts !

Skype – Information
Information
Installing Skype failed; code 1603
A fatal error occurred during installation.
OK
