Service Disruption: Outage to Teams Calling Users Dialing 911

Incident Report for CU Anschutz ISS and CU Denver OIT

Investigating

ISS is aware of and currently investigating a service disruption.

What service is affected: MSTeams Calling of 911

What is the issue: Users unable to dial 911 from MSTeams Calling phones or app.

Who is impacted: University MSTeams calling phone service users dialing 911. Non-Teams Calling phones are working as normal. Other dialing also working as normal.

Workarounds (if any): If you need to call 911 emergency services, use the phone numbers below from a Teams Calling phone or call 911 as normal from a personal phone.
CU Denver Campus: 303-556-5000
CU Anschutz Campus: 303-724-4444

Thank you for your patience while our team works on identifying the cause and resolving it as quickly as possible.

Incident: 3076405

Posted Jul 15, 2026 - 14:35 MDT

This incident affects: Telephone Services (CU Anschutz, CU Denver, Off-Site Location).