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[Home](./index.md) &gt; [puppeteer](./puppeteer.md) &gt; [Protocol](./puppeteer.protocol.md) &gt; [Security](./puppeteer.protocol.security.md) &gt; [CertificateSecurityState](./puppeteer.protocol.security.certificatesecuritystate.md) &gt; [certificateNetworkError](./puppeteer.protocol.security.certificatesecuritystate.certificatenetworkerror.md)

## Protocol.Security.CertificateSecurityState.certificateNetworkError property

The highest priority network error code, if the certificate has an error.

<b>Signature:</b>

```typescript
certificateNetworkError?: string;
```