Skype first acknowledged that it was having trouble on Thursday, via a note on the Skype website indicating that a small number of users may be having problems signing into the service. At the time, Skype noted that the flaw primarily affected Skype for Windows users.
By late afternoon Thursday, Skype issued an update of its Windows client to help solve the issue.
“Earlier today, a corruption occured in a small percentage of users’ systems that resulted in some of our community not being able to sign in to Skype,” Skype spokesperson Peter Parkes wrote on the Skype blog. ” We issued some instructions which would allow you to get back online, but understand that they’re fairly technical, and have been working hard to produce a version of Skype for Windows which fixes this problem automatically.”