[Launched] Generally Available: Custom block response code and body for Application Gateway WAF
- Vendor
- Microsoft
- Product
- Microsoft Azure, Azure Application Gateway
- Type
- Availability
- Announcement date
- 2026-08-24
- Effective date
- Date not published
- Impact
- Affected
In brief
[Launched] Generally Available: Custom block response code and body for Application Gateway WAF
What the source says
Announcing the General Availability of custom block response code and body for WAF integrated with Application Gateway Azure WAF integrated with Application Gateway now supports customizable response status codes and bodies for blocked requests, enabling greater flexibility and control. By default, when the WAF blocks a request due to a matched rule, it returns a 403 status code with a "The request is blocked" message. As with WAF with Azure Front Door, now customers can also define a custom response status code and message with Application Gateway when WAF blocks a request. This customization is a policy-level setting, ensuring that all blocked requests receive the same custom response status and message. For further details, please reach out to the Azure WAF product team. Learn more .
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Reading for a salesperson
Who is affected: The audience described by the Microsoft update is represented by: [Launched] Generally Available: Custom block response code and body for Application Gateway WAF Announcing the General Availability of custom block response code and body for WAF integrated with Application Gateway Azure WAF integrated with Application Gateway now supports customizable response status codes and bodies for blocked requests, enabling greater flexibility and control. By default, when the WAF blocks a request due to a matched rule, it returns a 403 status code with a "The request is
Why it matters: The change matters because the official source describes: [Launched] Generally Available: Custom block response code and body for Application Gateway WAF Announcing the General Availability of custom block response code and body for WAF integrated with Application Gateway Azure WAF integrated with Application Gateway now supports customizable response status codes and bodies for blocked requests, enabling greater flexibility and control. By default, when the WAF blocks a request due to a matched rule, it returns a 403 status code with a "The request is
Urgency: Monitor
Next action: Review affected accounts with the customer using the official announcement.
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- Raw capture
2026-08-30T06:15:07.776356+00:00
- Event
[Launched] Generally Available: Custom block response code and body for Application Gateway WAF Announcing the General Availability of custom block response code and body for WAF integrated with Application Gateway Azure WAF integrated with Application Gateway now supports customizable response status codes and bodies for blocked requests, enabling greater flexibility and control. By default, when the WAF blocks a request due to a matched rule, it returns a 403 status code with a "The request is blocked" message. As with WAF with Azure Front Door, now customers can also define a custom response status code and message with Application Gateway when WAF blocks a request. This customization is a policy-level setting, ensuring that all blocked requests receive the same custom response status and message. For further details, please reach out to the Azure WAF product team. Learn more .
source - Product Microsoft Azure
[Launched] Generally Available: Custom block response code and body for Application Gateway WAF Announcing the General Availability of custom block response code and body for WAF integrated with Application Gateway Azure WAF integrated with Application Gateway now supports customizable response status codes and bodies for blocked requests, enabling greater flexibility and control. By default, when the WAF blocks a request due to a matched rule, it returns a 403 status code with a "The request is blocked" message. As with WAF with Azure Front Door, now customers can also define a custom response status code and message with Application Gateway when WAF blocks a request. This customization is a policy-level setting, ensuring that all blocked requests receive the same custom response status and message. For further details, please reach out to the Azure WAF product team. Learn more .
source - Product Azure Application Gateway
[Launched] Generally Available: Custom block response code and body for Application Gateway WAF Announcing the General Availability of custom block response code and body for WAF integrated with Application Gateway Azure WAF integrated with Application Gateway now supports customizable response status codes and bodies for blocked requests, enabling greater flexibility and control. By default, when the WAF blocks a request due to a matched rule, it returns a 403 status code with a "The request is blocked" message. As with WAF with Azure Front Door, now customers can also define a custom response status code and message with Application Gateway when WAF blocks a request. This customization is a policy-level setting, ensuring that all blocked requests receive the same custom response status and message. For further details, please reach out to the Azure WAF product team. Learn more .
source - Insight a salesperson
[Launched] Generally Available: Custom block response code and body for Application Gateway WAF Announcing the General Availability of custom block response code and body for WAF integrated with Application Gateway Azure WAF integrated with Application Gateway now supports customizable response status codes and bodies for blocked requests, enabling greater flexibility and control. By default, when the WAF blocks a request due to a matched rule, it returns a 403 status code with a "The request is blocked" message. As with WAF with Azure Front Door, now customers can also define a custom response status code and message with Application Gateway when WAF blocks a request. This customization is a policy-level setting, ensuring that all blocked requests receive the same custom response status and message. For further details, please reach out to the Azure WAF product team. Learn more .
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