# What NotchStar cannot stop and why

> Stop only asks your own processes to quit. It cannot stop system services, other users' processes or programs that ignore SIGTERM, and never forces.

Canonical: https://www.notchstar.com/help/notchstar-cannot-stop-process/
Last updated: 2026-11-04

Published 2026-11-04.

NotchStar's Stop button cannot stop everything. It only asks, with SIGTERM, and only for processes you own. If the process belongs to another user, is a protected system service, or simply ignores the request, it stays running.

## When Stop does nothing

| Situation | What you see |
|---|---|
| The process belongs to root or another user | The header says Could not stop (name). macOS does not let you signal it |
| The program ignores SIGTERM | Asked to quit shows, but the row stays |
| The program restarts itself | The row vanishes and returns. Something launched it again |
| The row's process ID is 1 or lower | Not signalled at all |
| The program is stuck | A stuck program may not act on the request |

## Why there is no force option

Forcing a process to end gives it no chance to save work or release files and ports. NotchStar leaves that out on purpose. A request that a program can ignore is safer than one it cannot, and the second press is there to make you check the row first.

## What to do instead

- Quit the program the usual way, from its own window or menu. Dev servers usually stop with Control and C in the terminal that runs them.
- If a service restarts itself, find what starts it, such as a login item or a background manager, and stop that.
- For a stuck program, Activity Monitor has Quit and Force Quit. Using it is your call.
- If the row shows network and you did not expect it, check the command before stopping anything. See [the Ports list columns](https://www.notchstar.com/help/notchstar-ports-list-columns/).

To use the button itself, read [how to stop a process on a port](https://www.notchstar.com/help/stop-process-on-port-notchstar/). To find where a server was started, use [Show in Finder](https://www.notchstar.com/help/show-port-project-in-finder-notchstar/). The tab is described on the [Disk feature page](https://www.notchstar.com/features/disk/).

## Quick answers.

### Does NotchStar have a force quit for ports?

No. It sends one polite request only. If a program needs more than that, use Activity Monitor or Terminal yourself.

## Keep reading.

- [Disk space, duplicates, apps and cleanup](https://www.notchstar.com/features/disk/): See free space, find big folders, duplicates and app leftovers, compress media and clean caches from your Mac notch. Everything goes to the Trash.
- [How to stop a process on a port with NotchStar](https://www.notchstar.com/help/stop-process-on-port-notchstar/): Press Stop on a Ports row, then press it again to confirm. NotchStar sends SIGTERM, a polite quit request, and never forces a process.
- [What the NotchStar Ports list shows](https://www.notchstar.com/help/notchstar-ports-list-columns/): Ports lists every TCP port something is listening on, with the project folder, the command, local or network, and Open, Show and Stop buttons.
- [How to show a port's project folder in Finder with NotchStar](https://www.notchstar.com/help/show-port-project-in-finder-notchstar/): The folder icon on a Ports row reveals the process's working directory in Finder. It is disabled when NotchStar cannot read that folder.

## More in Ports.

- [What the NotchStar Ports list shows](https://www.notchstar.com/help/notchstar-ports-list-columns/): Ports lists every TCP port something is listening on, with the project folder, the command, local or network, and Open, Show and Stop buttons.
- [How to open a localhost port from NotchStar](https://www.notchstar.com/help/open-localhost-port-notchstar/): The arrow icon on a Ports row opens http://localhost and that port number in your default browser. It always uses http, not https.
- [How to show a port's project folder in Finder with NotchStar](https://www.notchstar.com/help/show-port-project-in-finder-notchstar/): The folder icon on a Ports row reveals the process's working directory in Finder. It is disabled when NotchStar cannot read that folder.
- [How to stop a process on a port with NotchStar](https://www.notchstar.com/help/stop-process-on-port-notchstar/): Press Stop on a Ports row, then press it again to confirm. NotchStar sends SIGTERM, a polite quit request, and never forces a process.