> Source: [sk182651](https://support.checkpoint.com/results/sk/sk182651)

# sk182651 - Tray icon is missing after upgrading to E88.20 through E88.4X

| Property | Value |
|----------|-------|
| Solution ID | sk182651 |
| Date Created | 2024-09-17 |
| Last Modified | 2025-06-24 |
| Technical Level | General |
| Products | Endpoint Security |
| Versions | E89.X, E88.X |
| OS | Windows |

## Symptoms

- Tray icon is missing from the task bar after an upgrade to a version between E88.20 and E88.4x, although all Check Point processes are running.

## Cause

Some security software installed on the machine, such as Entrust, is injecting DLLs into the UI process, interfering with its security measures. As a result, the process is not trusted, and the client UI is prevented from starting due to security reasons.

## Solution

This problem was fixed. The fix is included starting from:  

* [**Enterprise Endpoint Security E88.50**.](https://support.checkpoint.com/results/sk/sk182372)
The security measures were moved out of the client UI process and into a separate process to prevent interference with the client UI startup.

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