<p>A few of Microsoft's Internet services experienced an outage earlier this week, which the company has attributed to a firmware update.</p><p>Microsoft's Outlook Blog reported that there was an outage to Outlook.com, Hotmail.com and SkyDrive services on Tuesday, March 12 at 1:35 p.m. PDT. The interruption cut off access to these services for some users.</p><p>According to Microsoft, the cause of the outage was a temperature spike in the physical region of one of its datacenters. At the time, Microsoft had been performing a firmware update on a core part of the physical plant, which led to the increased temperature.</p><p>This spike caused the datacenter's safeguards to jump into action, which prevented access to Outlook.com, Hotmail.com and SkyDrive services.</p><p><a href="http://www.dailytech.com/Microsoft+Blames+Equipment+Overheating+for+Recent+OutlookHotmailSkyDrive+Outage/article30124.htm">Keep reading...</a></p>