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.
On April 28, 2020, Microsoft 365 reported a Microsoft Teams outage in the Asia Pacific region at ~ 9am UTC.
Initially, Microsoft reported that the outage only affected users’ ability to update their presence status. However, roughly two hours later, at ~11 pm UTC, Microsoft then reported that the outage was also affecting users’ ability to send and receive messages in Teams.
On Tuesday April 21, 2020 at ~8:00am UTC, Microsoft reported that an issue with Outlook was delaying several users in Australia from sending mail for up to four hours.
Many Immediately began expressing their frustrations with the increased number of outages Office 365 users have recently been experiencing in the past month. While others reported that they were seeing issues go well beyond the 4 hours Microsoft reported.
Users Cannot access their mailbox via Outlook on the web in Exchange Online
On Monday April 20, 2020 starting at 9:30PM UTC, Microsoft experienced issues in Exchange Online, specifically Outlook on the Web.