On October 1st at roughly ~6:00 am UTC, Microsoft reported an issue where users were accessing their Exchange Online accounts via Outlook on the Web.
The initial investigation indicated that the issue was primarily affecting users based in India. However, Microsoft then reported that once additional data was collected from the affected infrastructure it was evident that the issue was affecting users worldwide.
On September 30th at roughly ~5:00 pm UTC, Microsoft reported an issue where users may be experiencing issues when attempting to access the Microsoft 365 admin center.
Many quickly began to confirm that they were experiencing the issue and express their frustration with the variety of Microsoft 365 services happening this week.
On September 29th at roughly ~2:15 pm UTC, Microsoft reported an issue where users may have been unable to connect to the Exchange Online service on their mobile devices.
Microsoft then reported that they had determined that corrective actions taken to address a previous issue had impacted Exchange ActiveSync and Microsoft was applying a fix to mitigate the impact.
On September 29th at roughly ~9:00 am UTC, Microsoft reported an issue where users may be unable to access SharePoint Online and OneDrive for Business.
Users confirmed they were experiencing this issue and expressed their frustration as this was one of many outages this week.
On September 28th at roughly ~9:45 pm UTC, Microsoft reported an issue affecting multiple Microsoft 365 services.
Microsoft reported that they were working to identify the full impact and that they would provide more information shortly.
On September 24th at roughly ~1:15 pm UTC, Microsoft reported an issue in which some users were not being able to receive email notifications through the SharePoint Online service.
On September 21st at roughly ~12:30 pm UTC, Microsoft reported an issue with some users being able to load Power Apps forms.
Although Microsoft reported that they had implemented a fix, many reported that they were still experiencing issues.
On September 17th at roughly ~12:30 pm UTC, Microsoft reported an issue with some users accessing the admin center in Microsoft Teams.
Many confirmed they were experience the issue and reported many of their tenants were experiencing the issue as well.
On August 31st at roughly ~4:30 pm UTC, Microsoft reported an issue with some users accessing Power Apps in Microsoft 365.
Many confirmed they were experience the issue and suggested an update may to be blame for the issues they were experiencing.
On August 27th at roughly ~8:30 am UTC, Microsoft reported an issue with some users receiving test notifications on their mobile devices.
Several hours later at ~6:00pm, Microsoft reported that the issue was specifically affecting Android users and that they were working to apply a mitigation.