Microsoft Copilot and Teams are moving to new web addresses in October

What is changing for Microsoft Copilot and Teams?

Microsoft is moving the web addresses of Copilot and Teams. The Microsoft 365 Copilot app is being renamed Microsoft Copilot, and its web address is moving from m365.cloud.microsoft to copilot.cloud.microsoft. Teams is moving to teams.cloud.microsoft.

Microsoft started redirecting users to the new Copilot address in early September where it is reachable. Organisations that block copilot.cloud.microsoft will be redirected in October. Computerworld reports the Teams move is already under way, that all redirects should be finished by early October, and that some Teams exceptions may run until 31 December.

Why could the new web addresses break access for your staff?

If a firewall, proxy or security tool blocks the new addresses, staff could lose access to Copilot or Teams. Microsoft's advice is to make sure devices, proxies, firewalls and web gateways allow connections to *.cloud.microsoft.

For a midsize business, the risk is simple. If an IT provider or a security tool has an allowlist that does not include the new addresses, people may open Copilot or Teams one morning and find it will not load. According to Computerworld, businesses that blocked the new Copilot address on purpose can use Microsoft's Tenant Restrictions control instead.

What should you do about the new Microsoft addresses this week?

Your business should send a short note this week to whoever manages your network or Microsoft 365, whether that is in-house IT or an outside provider, asking them to confirm that *.cloud.microsoft is allowed on office networks, VPNs and managed laptops, and to check message MC1462915 in the Microsoft 365 admin centre. If you cannot make the change by October, Microsoft suggests contacting your account representative.