Yesterday we issued a Skype for Windows update to fix a corruption that occured in a small percentage of users' systems, resulting in some of our community not being able to sign in to Skype.

You need to ensure that no Skype processes are left running before installing this update, so please be sure to quit your existing Skype application, restart your computer, then begin performing the download.

If you're using Skype for Windows, and have experienced this problem logging in, please update Skype to the latest version now.

We plan to release an update to Skype for Mac today to address the same issue, and we'll update you when that becomes available.