> Source: [sk167013](https://support.checkpoint.com/results/sk/sk167013)

# sk167013 - Endpoint Security Client upgrade fails with "Error 26814.SBA updater (EPNetUpdater.exe) is working. Installation cannot proceed."

| Property | Value |
|----------|-------|
| Solution ID | sk167013 |
| Date Created | 2020-05-22 |
| Last Modified | 2020-06-10 |
| Technical Level | Advanced |
| Products | Endpoint Security |
| Versions | Cloud, E89.X, E88.X |

## Symptoms

- When upgrading from any Endpoint Security Client version to E83.00 the following error can be found in the installation logs:  
CA: 23:11:08:228 StopAllServices HandleError: An installer error occured.  
An MSI error occurred, but don't have database to lookup error.  
EPNetUpdater is running  
Source of error: f:\\ckp\\src\\ep_calib\\e83_00\\eps\\calibrary\\stopallservices.cpp(27)  
Last Windows error = #0, The operation completed successfully.  
MSI (s) (FC!5C) \[23:11:08:228\]: Product: Check Point Endpoint Security -- Error 26814.SBA updater (EPNetUpdater.exe) is working. Installation cannot proceed.

## Cause

Changes that were made recently prevent *EPNetUpdater.exe* and *Installer* to run side by side.  
Since the *EPNetUpdater.exe* process is running on the machine, *Installer* cannot run and will retry later on.

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## Solution

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