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On June 3, 2020 at ~1:00 pm UTC, Microsoft reported an issue in which users from Brazil were not able to connect to Microsoft 365 services.
At ~3:00 pm UTC, Microsoft reported that the previous issue had been resolved and that further details could be found in the admin center.
On Monday June 1st at ~7:00 pm, Microsoft 365 statues reported that they were investigating an issue that was affecting sign-in functionality for the Skype for Business service. They soon after reported that the issue was affecting a subset of users in the United States.
Microsoft reported an outage involving SharePoint online and OneDrive for business on June 1, 2020 at ~4:00am UTC. Shortly after, Microsoft 365 Status reported that the issue was primarily isolated to users within Australia.
On May 22nd, 2020, Microsoft 365 Status reported an issue impacting multiple Microsoft 365 services at ~8:00pm UTC.
Microsoft reported soon after that the issue was caused by a recent update that was preventing users from successfully authenticating to multiple Microsoft 365 services. They were attempting to re-route traffic to a healthy infrastructure.
On May 18th, 2020 at ~9:30am UTC, Microsoft reported that some users in Northern and Western Europe may experience problems accessing Microsoft Forms.
Some expressed concerns that the admin center was not updated with the current issues. While others expressed they were still experiencing issues and were concerned regarding when it would be resolved.
On May 13th, 2020 at ~5:30pm UTC, Microsoft reported an outage preventing users from connecting to Exchange.
They reported some users may be receiving an ADSTS error when connecting to or using exchange and that they were actively working to resolve this issue
On May 7th, 2020 at ~9:00pm UTC, Microsoft reported that they were deploying a solution to address an issue in which users may be experiencing repeated credential prompts within the Outlook client when using Classic Authentication.
On May 6th, 2020 at ~11:30pm UTC, Microsoft reported an outage causing intermittent Teams calls to drop when answered.
They claimed to have identified the potential problem and were working on mitigating impact.
On May 6th, 2020, Microsoft reported an outage affecting users’ ability to join Microsoft Teams Live Events around ~ 2:00pm UTC.
At first, it was reported that only users in Europe and the UK were being affected. However, it soon became clear users were being affected all over, from Canada to Colombia, and to the APAC region. In an attempt to resolve the issue, Microsoft quickly redirected traffic to an alternate infrastructure. They also suggested recreating events to expedite remediation while the issue was resolved.
On May 5th, 2020, Microsoft 365 Status reported a Microsoft Teams outage in North America at ~ 8:00pm UTC.
Microsoft initially reported that many users were experiencing problems viewing presence information in Teams in the North American region. However, roughly a half an hour later, Microsoft revised their initial statement and reported that users were being affected worldwide.