---
title: "Checking the version of Rest PKI"
description: "Checking the installed version of an on-premises Rest PKI instance through its api/system/info URL, which returns an XML, and where to update it."
canonical: "https://docs.lacunasoftware.com/en-us/articles/rest-pki/on-premises/check-version"
locale: "en"
product: "Rest PKI (legacy)"
last_updated: "2026-10-12"
---

# Checking the version of Rest PKI

In order to check the installed version of your [on premises instance](https://docs.lacunasoftware.com/en-us/articles/rest-pki/on-premises) of [Rest PKI](https://docs.lacunasoftware.com/en-us/articles/rest-pki),
access the following URL from a web browser:

```text
https://your-restpki-address/api/system/info
```

Example: https://pki.rest/api/system/info

The system will return an XML with the version, for instance:

```xml
<SystemInfo xmlns:i="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://schemas.datacontract.org/2004/07/Lacuna.RestPki.Api.System">
  <ProductName>Lacuna Rest PKI</ProductName>
  <ProductVersion>1.17.1</ProductVersion>
</SystemInfo>
```

To update your instance of Rest PKI, see article [Updating Rest PKI on Windows Server](https://docs.lacunasoftware.com/en-us/articles/rest-pki/on-premises/windows-setup/update)