> Source: [sk184388](https://support.checkpoint.com/results/sk/sk184388)

# sk184388 - Illegal header format detected in URL Filtering 

| Property | Value |
|----------|-------|
| Solution ID | sk184388 |
| Date Created | 2025-12-01 |
| Last Modified | 2026-08-19 |
| Technical Level | General |
| Products | Security Gateway |
| Versions | R81.20 |
| OS | Gaia |

## Symptoms

- SmartConsole logs show RAD (Resource Access Daemon) alerts, primarily "Response with wrong status code" for categorization queries. This causes performance bottlenecks

## Cause

The issue occurs when HTTP requests do not comply with https://www.rfc-editor.org/rfc/rfc9112.html#section-3.2. Specifically, if the connection uses a non-proxy method other than OPTIONS, the request path must include a forward slash (/). Missing this slash results in invalid URL contexts for blades.

## Solution

[Contact Check Point Support](https://www.checkpoint.com/support-services/contact-support/) to get a Hotfix for this issue.

A Support Engineer will make sure the Hotfix is compatible with your environment before providing it.  
For faster resolution and verification, collect these files:

1. [CPinfo](https://support.checkpoint.com/results/sk/sk92739) file from the Management Server involved in the case.
2. [CPinfo](https://support.checkpoint.com/results/sk/sk92739) file from the Security Gateway / each Cluster Member / Security Group involved in the case.

**Hotfix installation instructions:**   
Refer to [sk168597 - How to install a Hotfix](https://support.checkpoint.com/results/sk/sk168597).

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# Agent Instructions

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