Microsoft is having a service outage that affects Exchange Online mail flow and mailbox access in many regions (Microsoft incidents EX1550543). Because of this, some emails from Microsoft 365 accounts that use WiseStamp server-side signatures are delayed. Delayed emails are queued and retried automatically. They are not lost. Emails keep arriving with signatures, though some are still delayed. You don’t need to do anything.
Employee Sync for Entra customers may have degraded functionally, specifically in retrieving full profile/photo information from Entra ID. No action is required and once the Microsoft outage is resolve, so too the data in WiseStamp should be resolved.
Microsoft is still working on a fix. They report partial recovery in some regions but no full resolution yet. WiseStamp’s own systems are working normally.
Posted Nov 13, 2026 - 09:54 UTC
This incident affects: Signatures Embedding - Email Servers (Microsoft Exchange Online Integration) and Management Platform (Directory Sync - Microsoft Active directory (Azure)).