Tessian US status updated
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This chart shows the number of user-reported issues for Tessian US service health over the past 24 hours, grouped into 20-minute intervals. It's normal to see occasional reports, which may be due to individual user issues rather than a broader problem.
See where users report Tessian US is down. The map shows recent Tessian US outages from around the world.
Tessian US Outage MapIn the last 90 days, Tessian US had 4 incidents with a median duration of 14 hours 12 minutes.
Incidents
Major Outages
Minor Incidents
Median Resolution
Check Tessian US status history below. IsDown detects when Tessian US is down, tracking both official outages and user-reported issues.
| Title | Started At | Duration |
|---|---|---|
|
We are aware of an issue with Microsoft experiencing service degradation. This will result in the...
|
Jan 22, 2026 at 09:27 PM UTC
|
about 17 hours |
|
We've been made aware of a Microsoft issue affecting all OnSend Office Add-ins within Outlook for...
|
Jan 15, 2026 at 04:17 PM UTC
|
about 1 hour |
|
Proofpoint has received reports of the M365 Add-in timing out.
After investigation, it timeouts ...
|
Jan 11, 2026 at 12:25 AM UTC
|
about 12 hours |
|
Impact window: 10:03 UTC - 13:08 UTC December 2nd 2025
Impacted Add-in: Smart Alerts M365 Add-in
...
|
Dec 02, 2025 at 03:29 PM UTC
|
1 day |
|
We are aware of an issue affecting a critical Microsoft-hosted library used by the M365 add-in st...
|
Oct 29, 2025 at 04:28 PM UTC
|
about 8 hours |
|
Starting at 07:40 UTC on 09 October 2025, Microsoft experienced a service incident with Azure Fro...
|
Oct 09, 2025 at 01:45 PM UTC
|
about 4 hours |
|
Inbound protection experienced degraded performance between 4:00 PM-6:00 PM UTC, with an addition...
|
Sep 02, 2025 at 08:54 PM UTC
|
1 day |
|
Since late on August 5th, some customers may have had a delay in Security Events showing up in th...
|
Aug 08, 2025 at 04:21 PM UTC
|
3 days |
|
A small number of US hosted customers may have experienced delays with email delivery routed thro...
|
Jun 26, 2025 at 04:47 PM UTC
|
11 days |
|
Beginning May 8th, we have observed intermittent issues affecting some customer's message deliver...
|
May 12, 2025 at 05:00 PM UTC
|
about 23 hours |
Check if any Tessian US component is down. View the current status of 6 services and regions.
| Component | Status |
|---|---|
| Integrations | OK |
| Protection | OK |
| Respond | OK |
| Tessian API | OK |
| Tessian Cloud Email Security Platform | OK |
| Tessian Portal | OK |
IsDown has monitored Tessian US continuously since May 2025. Over that time, we've documented 10 outages and incidents, averaging 1.1 per month.
We monitor Tessian US's official status page across 6 components. IsDown interprets Tessian US statuses (operational and incident) to deliver precise health metrics and filter alerts by the components you actually use.
To check if Tessian US is down, IsDown combines official status data with user reports for early detection. Vendors often delay acknowledging problems, so user reports help us alert you before the official announcement.
Engineering and operations teams rely on IsDown to track Tessian US status and receive verified outage alerts through Slack, Teams, PagerDuty, or 20+ other integrations.
IsDown checks Tessian US's status page every few minutes, across all 6 components. We combine official status data with user reports to detect when Tessian US is down, often before the vendor announces it.
When Tessian US status changes, IsDown sends alerts to your preferred channels. Filter by severity to skip noise and focus on outages that affect your business.
IsDown checks Tessian US official status page for major/minor outages or downtimes. A major outage is when Tessian US experiences a critical issue that severely affects one or more services/regions. A minor incident is when Tessian US experiences a small issue affecting a small percentage of its customer's applications. An example is the performance degradation of an application. The moment we detect a Tessian US outage, we send you an alert and update your dashboard and status page.
Tessian US and other vendors don't always report outages on time. IsDown collects user reports to provide early detection of outages. This way, even without an official status update, you can stay ahead of possible problems.
IsDown collects all information from the outages published in Tessian US status page to provide the context of the outage. If available, we gather the title, description, time of the outage, status, and outage updates. Another important piece of information is the affected services/regions which we use to filter the notifications that impact your business.
IsDown monitors Tessian US and all their 6 components that can be affected by an outage. IsDown allows you to filter the notifications and status page alerts based on the components you care about. For example, you can choose which components or regions affect your business and filter out all other outages. This way you avoid alert fatigue in your team.
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IsDown checks the status of over 5,850+ services every few minutes. We aggregate official status information and normalize it, plus collect crowdsourced reports for early outage detection.
When we detect an incident or status change, you receive an alert immediately. Customize notifications by service, component, or severity to avoid alert fatigue.
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Looking for Tessian US outage alerts like Downdetector? IsDown monitors Tessian US's official status page for verified incident data, not just user reports. Know exactly when Tessian US is down, which components are affected, and when service health is restored. Here's why official Tessian US status monitoring beats crowdsourced detection:
| Features | IsDown | Downdetector |
|---|---|---|
| Official Tessian US status page monitoring. Know when Tessian US is down with real time incident details. | ||
| Monitor 5,850+ services including Tessian US in a single dashboard. | ||
| Instant Tessian US outage alerts sent to Slack, Teams, PagerDuty, and more. | ||
| Combined monitoring: Tessian US official status plus user reports for early outage detection. | ||
| Maintenance feed for Tessian US | ||
| Granular alerts filtering by Tessian US components and regions. |
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Tessian US isn't down. You can check Tessian US status and incident details on the top of the page. IsDown continuously monitors Tessian US official status page every few minutes. In the last 24 hours, there were 0 outages reported.
Tessian US is currently operational. You can check Tessian US status and incident details on the top of the page. The status is updated in almost real-time, and you can see the latest outages and issues affecting customers.
No, there is no ongoing official outage. Check on the top of the page if there are any reported problems by other users.
Currently there's no report of Tessian US being slow. Check on the top of the page if there are any reported problems by other users.
IsDown monitors the Tessian US official status page every few minutes. We also get reports from users like you. If there are enough reports about an outage, we'll show it on the top of the page.
Tessian US last outage was on January 22, 2026 with the title "Microsoft service degradation impacting mailflow"
IsDown has tracked 10 Tessian US incidents since May 2025.
Check the Tessian US status at the top of this page. IsDown combines official status page data with user reports to show whether Tessian US is down for everyone or if the issue is on your end.
IsDown monitors 6 Tessian US components in real-time, tracking the official status page for outages, degraded performance, and scheduled maintenance.
Because IsDown is a status page aggregator, which means that we aggregate the status of multiple cloud services. You can monitor Tessian US and all the services that impact your business. Get a dashboard with the health of all services and status updates. Set up notifications via Slack, Datadog, PagerDuty, and more, when a service you monitor has issues or when maintenances are scheduled.
IsDown and DownDetector help users determine if Tessian US is having problems. The big difference is that IsDown is a status page aggregator. IsDown monitors a service's official status page to give our customers a more reliable source of information instead of just relying on reports from users. The integration allows us to provide more details about Tessian US's Outages, like incident title, description, updates, and the parts of the affected service. Additionally, users can create internal status pages and set up notifications for all their third-party services.
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