---
title: "Get OS versions"
type: reference
method: GET
path: /rest-api/targeting/operating-system/{osName}/versions.do
tag: "Targeting Rules"
---

# Get OS versions

`GET https://YOUR-NETWORK-DOMAIN/rest-api/targeting/operating-system/{osName}/versions.do`

Returns the list of available version values for the specified operating system, suitable for OS version targeting rules. The response is a JSON array of version strings for the given OS. Requires MANAGE_DEMAND_TARGETING permission. The osName path parameter must be one of the values returned by the OS values endpoint.

## Path params

| Name | Type | Required | Example | Description |
|---|---|---|---|---|
| `osName` | string | yes | `WINDOWS` | Operating system. Accepts enum name or integer ID for backward compatibility |

## Responses

- `200` — Success
- `400` — Bad request — invalid or missing parameters
- `401` — Unauthorized
- `403` — Forbidden
- `404` — Not found — resource does not exist
- `500` — Internal server error

## Example request

```bash
curl --request GET \
  --url 'https://YOUR-NETWORK-DOMAIN/rest-api/targeting/operating-system/WINDOWS/versions.do' \
  --header 'X-Api-Key: YOUR_API_KEY'
```

Source: https://epom.com/ad-server/docs/api/targeting-rules/get-targeting-operating-system-versions