Where to Configure Microsoft 365 and Teams Network Endpoints
Question details
The user needs to know where to configure Microsoft 365 and Teams HTTPS endpoints, IP addresses, and blob URLs for network security systems.
- Product
- Microsoft 365 / Microsoft Teams
- Device & OS
- not provided
- Scenario
- Configuring firewalls, proxies, routers, or other security appliances to allow M365 and Teams network traffic.
- Observed behavior
- Successfully permit traffic to necessary Microsoft 365 and Teams endpoints through organizational network security devices.
Ensure you have administrative access to your organization's firewall, proxy, or router settings, and obtain the latest official list of Microsoft 365 URLs and IP address ranges.
Consult Network Administrators and Review Endpoint Categories
Determine where each endpoint should be allowed by reviewing official Microsoft documentation and working with your IT team to update your network security systems.
Because Microsoft 365 and Teams rely heavily on specific network ports and IP ranges, configuration must be done at the network hardware or software level. This typically involves making changes to your firewall rules, proxy bypass lists, or routing tables.
Determine which network systems (such as hardware firewalls, proxy servers, routers, or VPN gateways) inspect and process internet traffic leaving your organization's network.
Access the official Microsoft 365 URLs and IP address ranges documentation on Microsoft Learn to identify the specific HTTPS endpoints, blob URLs, and IP subnets required for Teams and Microsoft 365.
Provide the necessary endpoint lists to your network administrator so they can configure the appropriate allowlist rules or proxy bypass rules in your organization's security systems.
If you encounter specific configuration or traffic routing issues, log in to the official Office 365 Networking community forums and post your question to get guidance from specialized networking teams.
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Frequently Asked Questions
Why do I need to configure network endpoints for Microsoft 365 and Teams?
Microsoft 365 and Teams rely heavily on continuous cloud connectivity. Firewalls, proxies, and deep packet inspection devices can block or delay this traffic, leading to dropped Teams calls, synchronization errors, or an inability to access services. Configuring the correct endpoints ensures seamless communication.
Where can I find the most up-to-date list of Microsoft 365 IP addresses and URLs?
Microsoft publishes and regularly updates the official list of Microsoft 365 URLs and IP address ranges on the Microsoft Learn documentation portal. You can also subscribe to their provided RSS feed to receive immediate notifications when endpoints change.
Do I need to bypass my proxy server for Microsoft Teams traffic?
Yes, it is highly recommended to bypass proxy servers for all Teams media traffic (audio, video, and screen sharing). Sending real-time media traffic through a proxy often introduces latency, packet loss, and jitter, which severely degrades meeting quality.
