Preliminary Postmortem: Performance Issues and failures in VSTS West Europe – 7 February 2018

Edit February 26, 2018: We have just posted an updated and complete postmortem here: https://blogs.msdn.microsoft.com/vsoservice/?p=16295 Customer Impact On 7 February 2018 we had an incident which impacted users in our Western European scale unit. During this time, users experienced slow performance and 503 errors (service unavailable) when interacting with VSTS services. Close to 5,000 users were…


Postmortem – Intermittent Failures for Visual Studio Team Services on 14 Dec 2017

On 14 December 2017 we began to have a series of incidents with Visual Studio Team Services (VSTS) for several days that had a serious impact on the availability of our service for many customers (incident blogs #1 #2 #3). We apologize for the disruption these incidents had on you and your team. Below we…


Postmortem – Availability issues with Visual Studio Team Services on 6 Dec 2017

On 6 December 2017 we had a global incident with Visual Studio Team Services (VSTS) that had a serious impact on the availability of our service (incident blog here). We apologize for the disruption. Below we describe the cause and the actions we are taking to address the issues. Customer Impact This was a global…


Postmortem – Availability issues with Visual Studio Team Services on 21 November 2017

On 21 November 2017 we had an incident with Visual Studio Team Services (VSTS) that had a serious impact on the availability of our service for many customers (incident blog here). We apologize for the disruption. Below we describe the cause and the actions we are taking to address the issues. Customer Impact This incident…


Postmortem – Availability issues with Visual Studio Team Services on 16 November 2017

On 16 November 2017 we had a global incident with Visual Studio Team Services (VSTS) that had a serious impact on the availability of our service (https://blogs.msdn.microsoft.com/vsoservice/?p=15526). We apologize for the disruption. Below we describe the cause and the actions we are taking to address the issues. Customer Impact This was a global incident that…