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Ok, please close all IE windows first and then go to Start and type in cmd in the search bar. Right-click on it, and click 'run as administrator'. Then copy and paste the following command (instead of typing):regsvr32 /u "c:\Program Files\Skype\Toolbars\Internet Explorer\SkypeIEPlugin.dll (Note: make sure that there is single space before /u and before "c:\...")
Restart IE and check if you still face the same issue..