<p>Network World - The Outlook.com partial outage lasting 16 hours on Tuesday and Wednesday morning was caused by a firmware update gone awry that triggered a temperature spike in a Microsoft data center, resulting in automatic safeguards that made a large number of servers inaccessible.</p><p>Because of the unspecified safeguards, downed servers couldn't fail over on their own so restoration work had to be done manually, slowing down the process, according to a blog post by Microsoft Outlook.com Vice President Arthur de Haan.</p><p>[ BACKGROUND: Microsoft fixes Hotmail, Outlook.com glitches that caused outage</p><p>RELATED: Microsoft Hotmail, Outlook, SkyDrive problems could hurt customer confidence</p><p><a href="http://www.networkworld.com/news/2013/031413-microsoft-outlook-outage-267705.html">Keep reading...</a></p>