Outage in Microsoft 365
Some users may be unable to access or protect content using Azure Rights Management (ARM) across Microsoft 365 services
Resolved Minor
October 19, 2026 - Started 1 day ago
- Lasted about 2 hours
Incident Report
Summary AI Generated
**Microsoft 365 – Azure Rights Management (ARM) Outage** Some Microsoft 365 users were unable to encrypt or decrypt protected content — including files and emails — due to unhealthy service components responsible for processing ARM requests. The issue affected ARM-dependent functionality across Microsoft 365 apps for approximately 1.6 hours. Microsoft restarted the affected components, observed early signs of recovery, and continued investigating the root cause.
Title: Some users may be unable to access or protect content using Azure Rights Management (ARM) across Microsoft 365 services
User impact: Users may be unable to access or protect content using ARM across Microsoft 365 services.
More info: Impact may prevent users from encrypting or decrypting protected content, including files and email messages, across Microsoft 365 services that rely on ARM.
Current status: We’ve identified that some service components responsible for processing Azure Rights Management requests are in an unhealthy state. We’re attempting to restart the affected components to mitigate impact. We’re seeing early signs of service recovery and are investigating the root cause while evaluating whether additional mitigation actions are required.
Scope of impact: Some users attempting to encrypt or decrypt content using Microsoft 365 services that rely on ARM may be impacted.
Next update by: Monday, October 19, 2026, at 11:00 AM UTC
User impact: Users may be unable to access or protect content using ARM across Microsoft 365 services.
More info: Impact may prevent users from encrypting or decrypting protected content, including files and email messages, across Microsoft 365 services that rely on ARM.
Current status: We’ve identified that some service components responsible for processing Azure Rights Management requests are in an unhealthy state. We’re attempting to restart the affected components to mitigate impact. We’re seeing early signs of service recovery and are investigating the root cause while evaluating whether additional mitigation actions are required.
Scope of impact: Some users attempting to encrypt or decrypt content using Microsoft 365 services that rely on ARM may be impacted.
Next update by: Monday, October 19, 2026, at 11:00 AM UTC
Components affected
Microsoft 365 appsTrusted by 1,000+ teams
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Latest Updates ( sorted recent to last )
1 day ago - at 10/19/2026 09:05AM
Title: Some users may be unable to access or protect content using Azure Rights Management (ARM) across Microsoft 365 services
User impact: Users may be unable to access or protect content using ARM across Microsoft 365 services.
More info: Impact may prevent users from encrypting or decrypting protected content, including files and email messages, across Microsoft 365 services that rely on ARM.
Current status: We’ve identified that some service components responsible for processing Azure Rights Management requests are in an unhealthy state. We’re attempting to restart the affected components to mitigate impact. We’re seeing early signs of service recovery and are investigating the root cause while evaluating whether additional mitigation actions are required.
Scope of impact: Some users attempting to encrypt or decrypt content using Microsoft 365 services that rely on ARM may be impacted.
Next update by: Monday, October 19, 2026, at 11:00 AM UTC
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