> Source: [sk170302](https://support.checkpoint.com/results/sk/sk170302)

# sk170302 - Endpoint Security Client consumes high CPU usage of Forensics (EFRService.exe) during Windows updates

| Property | Value |
|----------|-------|
| Solution ID | sk170302 |
| Date Created | 2020-11-02 |
| Last Modified | 2021-01-27 |
| Technical Level | General |
| Products | Endpoint Security |
| Versions | Cloud, E89.X, E88.X, R82.20, R82.10, R82, R81.20 |
| OS | Windows |

## Symptoms

- * Endpoint Security Client machine experiences slowness during Windows OS updates.
* Windows Task Manager shows that during the Windows updates process, the Forensics service (EFRService.exe) consumes high amount of CPU resources.

## Cause

During the Windows updates process, a lot of operations are being made by the Windows OS. There operations are monitored by the Forensics service causing it to use high amount of CPU resources.

## Solution

This problem was fixed. The fix is included in:

* [**Endpoint Security Client E83.00**](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk166576)

Check Point recommends to always [upgrade to the most recent version](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk117536).  

**Important clarification:** This specific issue is resolved **after reboot** in E83.00.   
A similar issue may be encountered **after an EP upgrade without reboot** . Our drivers calculate the certificate list on machine startup. In such a case, there was an upgrade of EP (without reboot) and a Win update. During the Win update, a process like TiWorker which is excluded by signer was not excluded. **This issue is resolved in E84.30.**

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