---
title: Troubleshooting monitoring in Logstash
description: When upgrading from older versions, the built-in logstash_system user is disabled for security reasons. To resume monitoring: Change the logstash_system...
url: https://www.elastic.co/elastic/docs-builder/docs/3028/reference/logstash/monitoring-troubleshooting
products:
  - Logstash
applies_to:
  - Elastic Stack: Generally available
---

# Troubleshooting monitoring in Logstash
## Logstash monitoring not working after upgrade

When upgrading from older versions, the built-in `logstash_system` user is disabled for security reasons. To resume monitoring:
1. Change the `logstash_system` password:
   ```json

   {
     "password": "newpassword"
   }
   ```
2. Re-enable the `logstash_system` user:
   ```json
   ```