Please try downloading/installing from here and choose the run or open option when prompted: http://download.skype.com/SkypeSetup.exe
If this fails, please delete your IE ("Internet Explorer") browser cache, cookies and temp files and try again using a IE browser window, even if IE is not your default browser.
Please use this direct link to download the latest beta versions of skype
i gave you the offline installer. just click on the link i have given above, and download it on your "desktop"
when you got it, double click on it (run) and start installation & JOIN IT.
Note That: Temporary disable Antivirus/Firewall. You can reactivate your Antivirus/Firewall after downloading or installation. You may try another browser and also try resetting your browser settings.
Alternatively, You can download ANY versions of Skype from OldApps.com