Currently, Skype is experiencing an issue, and users worldwide are unable to log in at the moment. However, efforts are underway to address this problem, and users should be able to log in to Skype as soon as possible.
As previously announced, this afternoon on September 21, 2015, the entire Skype system worldwide experienced an incident, preventing users from logging into Skype. However, users can access Skype for Web to use Skype with limited impact on their work and studies.
Access Skype for web
Refer to how to Use Skype on the web as instructed by Mytour
Microsoft announces that the login issue with Skype will soon be resolved, so you don't need to sign up for Skype, create a new Skype account, or do anything else.
