Users of the hugely popular video-calling service have today been unable to communicate due to issues with the application.
The first problems were reported at around 9am GMT. Users will appear offline, even if they have logged on to the service, and their contacts will be unable to start calls with them.
A spokesperson for Skype said that: “Some of you may experience problems with Skype presence and may not see online. 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.
“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.”