> Source: [sk183278](https://support.checkpoint.com/results/sk/sk183278)

# sk183278 - Threat Emulation blade is not running

| Property | Value |
|----------|-------|
| Solution ID | sk183278 |
| Date Created | 2025-03-26 |
| Last Modified | 2025-03-28 |
| Technical Level | Advanced |
| Products | Endpoint Security |
| Versions | E88.X |

## Symptoms

- * Threat Emulation and the Anti-Malware security blades are not running.
* Re-installing the Harmony Endpoint Security Client does not resolve the issue.
* In the *C:\\programData\\Checkpoint\\Logs\\TELog\*.log* , this erorr appears: `The process cannot access the file 'C:\ProgramData\CheckPoint\Endpoint Security\Threat Emulation\Database\cache.db' because it is being used by another process.`

## Cause

.NET framework installed a wrong version of EntityFramework.dll in [GAC](https://learn.microsoft.com/en-us/dotnet/framework/app-domains/gac) and the File Protection blade loaded EntityFramework.dll from GAC instead of loading the DLL from **C:\\Program Files (x86)\\CheckPoint\\Endpoint Security\\TPCommon\\EntityFramework**

## Solution

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

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