Outage in Tessian EU

Issue with Offce Add-in checks and Core Email Protection via API

Resolved Minor
April 07, 2025 - Started 27 days ago - Lasted about 3 hours

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Outage Details

Office Add-in checks are currently failing, the add-in will let emails send without checking, but with potentially increased latency. Live Syncing is currently failing to process emails and Core Email Protection via API is currently failing to check emails.
Latest Updates ( sorted recent to last )
MONITORING 27 days ago - at 04/07/2025 01:31PM

The team completed remediating of the issue and we are currently monitoring.
The M365 Add In was impacted from 11:27-12:28 UTC.
Core Email Protection via API was impacted from 11:27-12:34 UTC. Emails during this window are currently being rechecked, so you may see a delay between email delivery and classification.

We will update once complete.

INVESTIGATING 27 days ago - at 04/07/2025 12:35PM

Office Add-in checks are currently failing, the add-in will let emails send without checking, but with potentially increased latency.

Live Syncing is currently failing to process emails and Core Email Protection via API is currently failing to check emails.

Latest Tessian EU outages

Issue with Office Add-in checks and Core Email Protection via API - 27 days ago
Issue with Office Add-in checks and Core Email Protection via API - Identified. - 27 days ago
Legitimate emails being marked as phish in Adaptive Email Security. - 3 months ago

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