“We have detected an issue with the status settings of Skype… Affected users will not be able to change their status, their contacts will all show as offline and they will be unable to start Skype calls to them… Instant messages are still being delivered as usual. The status issue also doesn’t affect Skype for Web, which can be used to make calls and send instant messages,”

the Skype team wrote in a blog post.
The company has assured that they are working on the fix.
“We’re working on a fix for this issue and hope to have an update for you soon. Please accept our apologies for any inconvenience caused while we get this resolved.”

All the registered Users are unable to sign into the Skype apps and are shown the message, “We’re a bit overloaded right now…Please try again later, or download Skype to use it anytime.”.