Advanced DNS configuration
Microsoft Search in Bing settings are now available in the Microsoft 365 admin center. Get started by assigning search admins in your admin center.
To ensure Bing can always identify users within your organization and successfully sign them in to their work or school account, configure your internal DNS server or proxy server to resolve from
ms.bing.com. To do this, create a DNS entry for
www.bing.com to be a CNAME for
Using a CNAME rather than the IP address is preferred since a CNAME will continue to work if the IP address changes. After you make this DNS change, results will continue to appear to your users as if they are coming from
This requires no additional configuration on client machines and provides a seamless experience for your users. When they go to
bing.com, they'll be automatically signed in more consistently, and if they can't be signed in automatically, they'll be prompted to do so.
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