> For the complete documentation index, see [llms.txt](https://nso-docs.cisco.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://nso-docs.cisco.com/guides/nso-6.3/administration/installation-and-deployment/post-install-actions/uninstall-system-install.md).

# Uninstall System Install

{% hint style="warning" %}
Applies to System Install.
{% endhint %}

NSO can be uninstalled using the [ncs-installer(1)](https://developer.cisco.com/docs/nso-guides-6.3/#!manual-pages/man.1.ncs-installer) option only if NSO is installed with `--system-install` option. Either part of the static files or the full installation can be removed using `ncs-uninstall` option. Ensure to stop NSO before uninstalling.

```bash
# ncs-uninstall --all
```

Executing the above command removes the Installation Directory `/opt/ncs` including symbolic links, Configuration Directory `/etc/ncs`, Run Directory `/var/opt/ncs`, Log Directory `/var/log/ncs`, `systemd` service file `/etc/systemd/system/ncs.service`, `systemd`environment file `/etc/ncs/ncs.systemd.conf`, and user profile scripts from `/etc/profile.d`.

To make sure that no license entitlements are consumed after you have uninstalled NSO, be sure to perform the `deregister` command in the CLI:

```cli
admin@ncs# license smart deregister
```


---

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