> Source: [sk172475](https://support.checkpoint.com/results/sk/sk172475)

# sk172475 - Captive portal is not loaded after upgrade or clean install using a Blink image

| Property | Value |
|----------|-------|
| Solution ID | sk172475 |
| Date Created | 2021-03-10 |
| Last Modified | 2026-06-18 |
| Technical Level | Advanced |
| Products | Security Gateway |
| Versions | R81.20, R81.10 (EOS), R81 (EOS) |

## Symptoms

- * After an upgrade or clean install using a Blink image, Identity Awareness Captive portal does not open.
* Identity Awareness portal folders \[/opt/CPNacPortal/htdocs/nac/\] are empty.

## Cause

The upgrade/clean install removes the NAC portal files.

## Solution

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

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