Microsoft’s Bing Down for 45 Minutes

    December 4, 2009

Microsoft’s search engine is facing a mini PR crisis after going down for 45 minutes last night starting at 7:10 PST. Microsoft used its Twitter account and blog to keep Bing visitors and fans informed:

From Twitter:



  2. we’re aware and looking into it…stay tuned ^az
  3. back up now ^az
  4. Details to come once we have the full picture. Thanks all for your patience ^az

About our outage earlier No worries if you didn’t notice – carry on with your bing ways :) ^az


Late last night Bing clarified what caused the outage on the Bing blog:

a note about today’s outage

December 03, 2009, 10:49 PM by bingteam was down between about 6:30 and 7:00 PM Pacific Time on Dec 3, 2009. During this time, users were either unable to get to the site, or their queries were returning incomplete results page. 

The cause of the outage was a configuration change during some internal testing that had unfortunate and unintended consequences. 

As soon as the issue was detected, the change was rolled back, which caused the site to return to normal behavior. Unfortunately the detection and rollback took about half an hour, and during that time users were unable to use 

We strive to maintain a high standard of operational excellence at Bing. We are running a post mortem to find out how our software and processes need to be improved to prevent anything like this from happening again. 

Satya Nadella 
Senior Vice President, Online Services Division


Note: A Bing representitive has not at this point responded to our request for further information.