Update: Mon, Feb 24 2014 05:58 AM UTC
This issue has been resolved and customers should see their previously queued builds (after 02:21 UTC) completed and new queued builds (since 05:40 UTC) start without delay. The root cause of the issue was a DNS entry pointing to an incorrect location which prevented our machine pool from operating. The issue was mitigated by correcting the DNS entry and flushing the DNS caches of the affected machines. We sincerely thank you for your patience and apologize for the inconvenience this may have caused you.
VS Online Service Delivery Team
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Initial Update: Mon, Feb 24 2014 04:49 AM UTC
We are currently investigating issues with VSO Hosted Build Service. Customers may experience delays in having their builds start since 2014-02-24 02:17 AM UTC. Our DevOps teams are engaged and actively looking at the issue. We apologize for the inconvenience and appreciate your patience. We will provide an update in 60 minutes.
VS Online Service Delivery Team