Microsoft Service Disruptions
Monitoring - Dear Client,

Microsoft is experiencing service disruptions, including Defender XDR. Kudelski Security has observed no impact to deployed security tools. We continue to monitor and will provide updates.
Nov 13, 2026 - 08:26 UTC

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Having trouble? Please do not hesitate to contact the Kudelski Security Cyber Fusion Center via phone or email.

๐Ÿ‘‰๐Ÿผ EMEA: +41 58 317 77 77 or [email protected]
๐Ÿ‘‰๐Ÿผ US: 1 (866) 929-3528 or [email protected]

The below is a log of past interruptions of Kudelski Security services.

Uptime over the past 90 days. View historical uptime.
Client Portal Operational
Client Portal API Operational
Monthly Reporting Operational
CFC Phone System Operational
Security Alert / Event Ingestion Pipeline / Managed System Access Operational
MDR ONE Operational
Vulnerability Scanning Operational
MDR One Resolute Operational
Operational
Degraded Performance
Partial Outage
Major Outage
Maintenance
Major outage
Partial outage
No downtime recorded on this day.
No data exists for this day.
had a major outage.
had a partial outage.

No incidents or maintenance related to this downtime.

Nov 14, 2026

No incidents reported today.

Nov 13, 2026

Unresolved incident: Microsoft Service Disruptions.

Nov 12, 2026

No incidents reported.

Nov 11, 2026

No incidents reported.

Nov 10, 2026

No incidents reported.

Nov 9, 2026

No incidents reported.

Nov 8, 2026

No incidents reported.

Nov 7, 2026

No incidents reported.

Nov 6, 2026

No incidents reported.

Nov 5, 2026

No incidents reported.

Nov 4, 2026

EMEA - Ingestion degradation
Resolved - The incident has been resolved and services are back to normal.
We thank you for your patience and understanding.
Nov 4, 02:22 UTC
Monitoring - The fix has been deployed in production. This fixed the issue.
Our ingestion is back and all services are back to normal.
We will monitor the situation for couple of minutes before closing the incident.
Nov 4, 02:07 UTC
Update - We are still working on the resolution of the incident.
We have implemented an internal work-around that allows us to monitor events in a degradated way.

We will continue monitoring the service while we push to full resolution of the incident.
Please be assured our teams are actively working on this incident and we will provide a resolution as soon as possible.
Nov 4, 01:19 UTC
Identified - The cause of the incident has been identified and we are actively working on the resolution.

According to the information available right now, we estimate the service should be fully back and functional within 1h.
No events will be lost during the incident.
Nov 4, 00:50 UTC
Investigating - We are experiencing a service degradation on our events ingestion. We are currently investigating the incident and will update this page in the next 1 hour. Please trust all our teams are actively working to a swift resolution of the degradation.
Nov 4, 00:42 UTC

Nov 3, 2026

Microsoft Sentinel API failures and delays in East US, East US 2, and West US regions
Resolved - The incident has been resolved and services are back to normal. We thank you for your patience and understanding.
Nov 3, 15:31 UTC
Monitoring - It seems that the issue has been fixed by Microsoft. We started to have again API access to Sentinel instance.
We will monitor the situation to confirm a full resolution.
Nov 3, 14:21 UTC
Update - Impacted regions has been update from Microsoft : Southeast Asia, East US, West US 2, West US 3, Canada Central, North Central US, Jio India West, Central US, Japan West, Australia Southeast, Qatar Central, Central India, East Asia, UAE Central, Canada East, West US, South Africa North, East US 2, Australia Central, Japan East, Korea South, Brazil South, West Central US, South Central US, Australia East, UAE North, Korea Central

The CFC continue to manually monitoring incidents in Sentinel console as API access is still not fixed by Microsoft and has extend this monitoring to the newly published list of impacted regions.

Last status from Microsoft :
We detected this issue through our automated service monitoring after identifying a significant increase in unsuccessful requests. Our investigation remains focused on a backend dependency that is not consistently starting and processing requests as expected, resulting in request failures and intermittent errors. We have applied several mitigation actions, including reverting a recent change, redeploying the affected components, and correcting supporting configuration; however, full recovery has not yet been confirmed. We are still validating the cause of the incident while working on mitigation workstreams to restore full service, including comparing diagnostic data from functioning and affected components and evaluating additional recovery actions.
Nov 3, 13:49 UTC
Update - Microsoft is still working on the issue, we will continue to monitor update from their side.

As a temporary solution, the CFC will start to monitor MS Sentinel incidents directly inside the MS Sentinel console for impacted clients.
This will allow to perform the monitoring in a best effort mode while MS fix this incident.
Nov 3, 09:09 UTC
Identified - Microsoft is currently experiencing Sentinel API failures and delays in East US, East US 2, and West US regions.
Microsoft EMEA customers are not impacted by this issue.

More information can be found here : https://app.azure.com/h/7H5N-XK8/d09a5a

We are currently following the incident and will update this page in the next 1 hour.
Nov 3, 07:51 UTC

Nov 2, 2026

No incidents reported.

Nov 1, 2026

No incidents reported.

Oct 31, 2026

No incidents reported.

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