customer domain for Azure application proxy

Question

customer domain for Azure application proxy

David Grant 0

Hello, We use Azure Application Proxy and need to publish a custom external domain for App Proxy access. Please enable the feature Custom Domain for Azure Application Proxy in our tenant (PII.com). We are licensed with Entra ID Premium P1. Thank you.

Sridevi Machavarapu 33,820 Reputation points Microsoft External Staff Moderator

2025-11-24T01:15:36.75+00:00

Hello David Grant,

Thanks for reaching out. The Custom Domain feature for Azure Application Proxy doesn’t require Microsoft to enable anything on your tenant. Since you already have Entra ID Premium P1, you can configure it directly.

To use your own domain (dcgxxxables.com), first add and verify it in the Entra admin center under Identity → Domain names using the TXT record. After that, open your Application Proxy–published app, choose your verified custom domain as the external URL, and upload a matching PFX certificate. Finally, create the required CNAME record in your public DNS pointing your custom hostname to the *.msappproxy.net target shown in the portal.

You can follow Microsoft’s step-by-step guide here: https://learn.microsoft.com/en-us/entra/identity/app-proxy/how-to-configure-custom-domain#create-and-verify-a-custom-domain

Hope this helps! Feel free to reach out if you have further queries.
Sridevi Machavarapu 33,820 Reputation points Microsoft External Staff Moderator

2025-11-25T04:08:57.2166667+00:00

Hello David Grant,

Following up to see if the provided suggestions helped you in any way or way. If issue still persists, feel free to reach out!

Your answer

Sridevi Machavarapu 33,820 Reputation points Microsoft External Staff Moderator

2025-11-24T01:15:36.75+00:00

Hello David Grant,

Thanks for reaching out. The Custom Domain feature for Azure Application Proxy doesn’t require Microsoft to enable anything on your tenant. Since you already have Entra ID Premium P1, you can configure it directly.

To use your own domain (dcgxxxables.com), first add and verify it in the Entra admin center under Identity → Domain names using the TXT record. After that, open your Application Proxy–published app, choose your verified custom domain as the external URL, and upload a matching PFX certificate. Finally, create the required CNAME record in your public DNS pointing your custom hostname to the *.msappproxy.net target shown in the portal.

You can follow Microsoft’s step-by-step guide here: https://learn.microsoft.com/en-us/entra/identity/app-proxy/how-to-configure-custom-domain#create-and-verify-a-custom-domain

Hope this helps! Feel free to reach out if you have further queries.
Sridevi Machavarapu 33,820 Reputation points Microsoft External Staff Moderator

2025-11-25T04:08:57.2166667+00:00

Hello David Grant,

Following up to see if the provided suggestions helped you in any way or way. If issue still persists, feel free to reach out!