The AADSTS90033 error message is typically displayed under normal circumstances when a user cannot get a token from Azure for the services they need to access.Ĭustomers also reported the inability to sign into the Azure Management Portal as well as an inability to access the typically spry Azure Status Page. Users attempting to access Office 365 email are reportedly being greeted with an ‘AADSTS90033’ error message, alongside the unhelpful warning: “Service is temporarily unavailable. In early April of 2018, the 6th of April to be precise, there was a widespread Email outage across most of the European data-centers that persisted over a day or two with many customers in the UK reporting that there were unable to access their mailboxes within Exchange. Sometimes they’re under your control and sometimes they aren’t.Īmong the significant Office 365 incidents and outages of 2018 were: April 2018 Email/Exchange Outage There were several incidents in 2018 that either affected thousands of users in multiple geographies, or lasted for several hours, or both. Often, performance problems can be transient or caused by local infrastructure or ISP’s. Network issues, both local and Internet-based, data center problems, malicious activity, and environmental conditions can all cause outages.įortunately, in most cases, outages are short-lived or localized to a specific geographic region.
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However, there can be outages due to a variety of reasons. Microsoft is making it both convenient and cost-effective to use the SaaS cloud-based Office 365 and Azure cloud services rather than a locally hosted Office, SharePoint and their respective on-premises services.