> Source: [sk169132](https://support.checkpoint.com/results/sk/sk169132)

# sk169132 - Sophos Endpoint Defense client unable to update when Endpoint Security Client installed 

| Property | Value |
|----------|-------|
| Solution ID | sk169132 |
| Date Created | 2020-09-16 |
| Last Modified | 2020-09-22 |
| Technical Level | Advanced |
| Products | Endpoint Security |
| Versions | Cloud, E89.X, E88.X |

## Symptoms

- Sophos Endpoint Defense client fails to update when Endpoint Security Client is installed.

## Cause

The Endpoint Security Client's Self-Protection is shielding the Sophos Endpoint Defense core files and preventing access to them.

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## Solution

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