Https:// suddenly stopped working and giving Unauthorized


I’m using SQL Server StreamInsight to stream twitter tweets into my Azure Blob. it was working fine… 1 or 2 weeks ago it suddenly started to give me Unauthorized using my username and password.
the URL is,Skype,XBox,Microsoft i typed it into Internet explorer, a popup of username and password popedup and when i put my username and password it doesn’t work.
any changes happened soon ?

appreciate your help