Agencies from Arizona to Florida reported outages that typically lasted about 30 minutes before being restored.
The 911 problems occurred the same night that widespread outages were reported for Microsoft services.
Redmond, Washington — home of Microsoft’s headquarters — tweeted Monday that city phones and emails were also experiencing outages.
The service health status page for Microsoft Azure — the company’s cloud computing service — posted, “A subset of customers in the Azure Public and Azure Government clouds may encounter errors performing authentication operations for a number of Microsoft or Azure services.” Microsoft said customers “should see signs of recovery.”
A spokesperson for the sheriff’s office in Hennepin County, Minnesota, told CNN they were not sure whether their 911 outage was related to the Microsoft issue.
The New York Police Department told CNN that while their 911 services had no reported outages, they did experience issues with Microsoft accounts.