---
title: "EPM Windows installer reports that the Segura™ application certificate is outside its validity period"
slug: "epm-windows-installer-segura-application-certificate-validity"
updated: 2026-11-03T20:30:07Z
published: 2026-11-03T20:30:07Z
canonical: "docs.senhasegura.io/epm-windows-installer-segura-application-certificate-validity"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.senhasegura.io/llms.txt
> Use this file to discover all available pages before exploring further.

# EPM Windows installer reports that the Segura™ application certificate is outside its validity period

The EPM Windows installer blocks the installation because the Segura™ application certificate is outside its validity period. This document covers EPM Windows 4.2.17.

## Symptom

- The installer stops with a message saying the Segura® application certificate is outside its validity period, and EPM Windows is not installed.
- The Windows Event Viewer records the error in the **EPM** log, usually with event ID `18001`. The **Details** part of the event shows the reason.

### Cause 1: The certificate is expired or not yet valid

The current date is after the certificate's expiration date, or before the date it becomes valid.

### Solution: Renew the certificate

1. Check the certificate's validity dates.
2. If it expired, renew it on Segura® Platform. See [How to manage web application SSL certificate](/v4-2/docs/orbit-cli-how-to-manage-web-application-ssl-certificate).
3. Run the installer again.

### Cause 2: The workstation clock is wrong

The certificate is valid, but the workstation's date, time, or time zone is wrong, so the certificate appears expired or not yet valid.

### Solution: Correct the workstation date and time

1. Correct the workstation's date, time, and time zone.
2. Run the installer again.

## For more information

- [EPM Windows agent requirements](/v4-2/docs/epm-windows-requirements)
- [Certificates](/v4-2/docs/orbit-web-reference-for-certificates)