> For the complete documentation index, see [llms.txt](https://helpcenter.xopero.com/xopero-one-en/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://helpcenter.xopero.com/xopero-one-en/troubleshooting.md).

# TROUBLESHOOTING

- [Changing the port of Xopero ONE Management Service](https://helpcenter.xopero.com/xopero-one-en/troubleshooting/changing-the-port-of-xopero-one-management-service.md)
- [Fetching device logs](https://helpcenter.xopero.com/xopero-one-en/troubleshooting/fetching-device-logs.md): This article explains how to fetch device logs from Xopero ONE for self-troubleshooting or when submitting a support ticket for technical assistance.
- [Handling errors in Xopero ONE](https://helpcenter.xopero.com/xopero-one-en/troubleshooting/handling-errors-in-xopero-one.md): This article describes how to troubleshoot and handle errors in Xopero ONE.
- [Enabling HTTPS for on-premise Xopero ONE installation](https://helpcenter.xopero.com/xopero-one-en/troubleshooting/enabling-https-for-on-premise-xopero-one-installation.md)
- [Restarting Xopero ONE agent service](https://helpcenter.xopero.com/xopero-one-en/troubleshooting/restarting-xopero-one-agent-service.md)
- [Changing the password reuse policy](https://helpcenter.xopero.com/xopero-one-en/troubleshooting/changing-the-password-reuse-policy.md): This article describes how to change the unique password policy in Xopero ONE Management Service.
- [Troubleshooting Azure DevOps permission errors](https://helpcenter.xopero.com/xopero-one-en/troubleshooting/troubleshooting-azure-devops-permission-errors.md): This article explains how to identify and resolve common permission-related errors in Azure DevOps by interpreting API error codes and messages.