> Source: [sk180649](https://support.checkpoint.com/results/sk/sk180649)

# sk180649 - "URL Filtering Blade - Internal system error. (0)" log on 1500 / 1600 / 1800 appliance

| Property | Value |
|----------|-------|
| Solution ID | sk180649 |
| Date Created | 2023-03-02 |
| Last Modified | 2026-04-23 |
| Technical Level | Advanced |
| Products | Security Gateway |
| Versions | R82.10, R82, R81.20 |
| Platform | 1500, 1600, 1800 |

## Symptoms

- * Quantum Spark 1500 / 1600 / 1800 appliance intermittently drops traffic with the "*URL Filtering Blade - Internal system error. (0)*" log.

* Rebooting the appliances resolves the issues only for a short time.

* Configuring the URL Filtering blade to work in the fail-open mode resolves the issue.

## Solution

This solution requires authentication. Please log in to view the full solution.

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