---
title: "Return One Maintenance Window for One Project"
method: GET
path: "/api/atlas/v2/groups/{groupId}/maintenanceWindow"
tags: ["Maintenance Windows"]
---

# Return One Maintenance Window for One Project

`GET /api/atlas/v2/groups/{groupId}/maintenanceWindow`

Returns the maintenance window for the specified project. MongoDB Cloud starts those maintenance activities when needed. You can't change your maintenance window until the current maintenance efforts complete. The maintenance procedure that MongoDB Cloud performs requires at least one replica set election during the maintenance window per replica set. Maintenance always begins as close to the scheduled hour as possible, but in-progress cluster updates or unexpected system issues could delay the start time.

## Path parameters

- `groupId` string, required

## Query parameters

- `envelope` boolean
- `pretty` boolean

## Response `200`

OK

## Other responses

- `401` — Unauthorized.
- `403` — Forbidden.
- `404` — Not Found.
- `429` — Too Many Requests.
- `500` — Internal Server Error.

---

[API](https://skmtc.dev/mongodb/apis/atlas-admin-api.md) · [All operations](https://skmtc.dev/mongodb/apis/atlas-admin-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/mongodb/atlas-admin-api/revisions/e37e8ef8429f/schema)