At 12:29 PM PST on February 22nd, 2013 there was a service interruption in all regions that affected customers who were accessing Windows Azure Storage Blobs, Tables and Queues using HTTPS. Availability was restored worldwide by 00:09 AM PST on February 23, 2013. Please read more details in the Blog post provided by Mike Neil.

Please read more about Windows Azure Storage Service Interruption here.