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Starting at 07:40 UTC on 09 October 2025, Microsoft experienced a service incident with Azure Front Door. Some critical dependencies of Office Add-ins, which would include the Proofpoint M365 Add-in, are served via Azure Front Door, meaning Outlook may have been prevented from loading the Add-in's code.
Impact: Some users may see latency or timeouts with the Add-in when trying to send an email.
As of 12:40 UTC, Microsoft has reported they recovered 96% of impacted resources. For additional details and impacted regions, please see:
https://azure.status.microsoft/en-us/status
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