Firstly I pay for my skype calls using skype to go. This gives me a 'landline' as I am in a remote area but with good internet access.
Skype used to connect automatically but now suddenly there is a pop up window with my user name inserted and wanting a password which I put in and then a swirly icon and after a moment it reverts to the same screen with a help link (which is no help) and Contact my network administrator.
I can still log into the skype website using the same details and can see my account.
I tried upgrading which would not install and I got an error message 'Failed to get proc address for GetLogicalProcessorInformation(Kernall 32.dll)
Tried uninstalling and downloading a new version..same result.
Used System Restore to go back and I have the old version of Skype still there but the same log in problem
Microsoft are totally unhelpful and point you to the support website and community support for criminy's sake! Have spoken to tech support...again useless.
I tried a method offered on the website which saw : run%appdata%\Skype and renamed the Skype folder as skype_old didn't work.
Another suggestion was (in the skype folder) to delete DBTemp folder .
Now the logging in icon does not return to the 2nd window described above but just swills away with a tiny flicker from skype according to Zone Zlarm.