---
title: Elastic Observability breaking changes
description: Breaking changes can impact your Elastic applications, potentially disrupting normal operations. Before you upgrade, carefully review the Elastic Observability...
url: https://docs-v3-preview.elastic.dev/elastic/docs-content/pull/4236/release-notes/elastic-observability/breaking-changes
---

# Elastic Observability breaking changes
Breaking changes can impact your Elastic applications, potentially disrupting normal operations. Before you upgrade, carefully review the Elastic Observability breaking changes and take the necessary steps to mitigate any issues. To learn how to upgrade, check [Upgrade your deployment, cluster, or orchestrator](https://docs-v3-preview.elastic.dev/elastic/docs-content/pull/4236/deploy-manage/upgrade).

## 9.0.1

There are no breaking changes in Elastic Observability 9.0.1.

## 9.0.0

<dropdown title="Profiling now defaults to 19Hz sampling frequency">
  For more information, check [#202278](https://github.com/elastic/kibana/pull/202278).
</dropdown>

<dropdown title="Removed log stream and settings pages">
  The following have been removed:
  - Logs Stream
  - Logs settings page
  - Logs stream panel in Dashboards
  For more information, check [#203996](https://github.com/elastic/kibana/pull/203996).**Action**
  To explore your logs, use the contextual experience in Discover.To view log streams, use Discover sessions.
</dropdown>