# Elasticsearch Upgrade (Windows) This article provides detailed instructions to upgrade Elasticsearch on a Windows environment. It includes all necessary preconditions, step-by-step upgrade actions, and post-upgrade validation procedures to ensure a reliable transition with minimal downtime and no data loss. ## **Prerequisites** * Administrative access to the Windows system. * A stable internet connection for downloading the upgrade package. * Sufficient disk space to hold both the current and new Elasticsearch installations and their data. * Backup of the following directories from the existing Elasticsearch installation: * `config` * `data` * `logs` ## **Upgrade Steps** **Target Example:** Upgrade from version **7.17.26** to **7.17.28**.\ The same steps apply for similar version upgrades. * **Stop the Existing Elasticsearch Service** * Press `Win + R`, type `services.msc`, and press **Enter**. * Locate the **Elasticsearch** service. * Right-click the service and select **Stop**.

* **Download the New Elasticsearch Version** * Download the `.zip` package for the new version:\ [Elasticsearch 7.17.28 Windows x86\_64](https://ovaledge.s3.us-west-1.amazonaws.com/scripts/packages/elasticsearch-7.17.28-windows-x86_64.zip?utm_source=chatgpt.com)

* **Extract the New Version** * Extract the `.zip` file to a new directory, for example: ``` C:\elasticsearch-7.17.28 ```

* **Migrate Configuration and Data** * Copy the following from the old installation (e.g., `C:\elasticsearch-7.17.26`) : * `config\elasticsearch.yml` * `config\jvm.options` * Entire `data` directory

* Paste them to the new installation (`C:\elasticsearch-7.17.28`)

* **Remove the Old Elasticsearch Windows Service** * Open **Command Prompt as Administrator**. * Navigate to the old installation’s `bin` directory and remove the service: ```cmd cd C:\elasticsearch-7.17.26\bin elasticsearch-service.bat remove ```

* **Install the New Version as a Windows Service** * From the same Command Prompt, navigate to the new installation’s `bin` directory and install the service: ```cmd cd C:\elasticsearch-7.17.28\bin elasticsearch-service.bat install ```

* **Start the New Elasticsearch Service** * Open `services.msc`. * Locate the **Elasticsearch** service (now pointing to the new path). * Right-click the service and select **Start**.

* **Verify the Upgrade** * Access the Elasticsearch API using a browser, `curl`, or Postman:
``` http://localhost:9200 ```

* The response should include the upgraded version:
```json { "name" : "YOUR-NODE-NAME", "cluster_name" : "elasticsearch", "cluster_uuid" : "xxxxxxxxxxxxxxxxx", "version" : { "number" : "7.17.28" } }article ```