Skype 5.9 released a hotfix for windows

Skype released a hotfix for windows which fixes the issues related to sign in.
Please download the most recent version of Skype for Windows today and share your feedback by commenting on our Support Network or by filing issues on our public issue tracker.

Update that incorporates the following improvements:

• A new confirmation message when sending a contact to a group conversation
• A new Hotkey for taking snapshots during video calls
• Improved non-standard international phone number recognition for Australian users
• The ability to opt-out from silent updates

Posted in: Microsoft,Skype,Windows