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Exchange Online
A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.
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Good day Farkrocks,
Currently, Microsoft is actively investigating the issue on their end. Here’s the latest update:
In the meantime, please ask your organization's IT administrator (if they still have access to the Microsoft 365 admin center) to monitor MO1550821 under Health > Service health for further updates. Having them use the "Report a problem" feature will also help Microsoft log the impact on your organization's tenant.
I hope this information is helpful.