Nothing working on Lumia 520 due to Microsoft Account problem-how to fix?

[nino9]

Nothing is getting saved on my 520 neither photos nor videos,not even songs.whatsapp is also not working properly,and date is also not updating.and if i download anything from store it says microsoft account service not available.and all these issues started at the same time. Please if someone can help.any short of advice for me.

 

[Laura Knotek]

Have you seen this kb from Microsoft? "Incorrect email or password" or "Couldn't sign in" error when you sign in to a Windows Phone with a Microsoft account