# According to Deployment

> | Action | Service Mode Robot | User Mode Robot |
| --- | --- | --- |
| Attended Execution | ✅ | ✅ |
| Unattended Execution | ✅ | ❌ `1` |
| Concurrent Job Execution | ✅ | ✅ |
| Automatic Session Management | ✅ | ❌ |
| High-Density Deployment | ✅ | ✅ |
| Stop Service on Tray Quit | ❌ | ✅ |
| Single Machine - Multi-User Deployment | ✅ | ✅ |

| Action | Service Mode Robot | User Mode Robot |
| --- | --- | --- |
| Attended Execution | ✅ | ✅ |
| Unattended Execution | ✅ | ❌ `1` |
| Concurrent Job Execution | ✅ | ✅ |
| Automatic Session Management | ✅ | ❌ |
| High-Density Deployment | ✅ | ✅ |
| Stop Service on Tray Quit | ❌ | ✅ |
| Single Machine - Multi-User Deployment | ✅ | ✅ |

`1` Unattended execution with the User Mode Robot is only possible under a locked screen while the user is logged in.

## Service Mode Robot

The Service Mode Robot is best suited in unattended automation scenarios and large-scale platform deployments. When a process is executed, the Robot Executor runs with the same rights as the user under which it is registered.

The Robot Service is launched by the Windows Service Control Manager under the Local System. It can open interactive Windows sessions, and has all the rights of a machine administrator. As such, it enables **automatic session management** (such as log on and log off) for unattended jobs. It is recommended to use the Service Mode Robot for large-scale platform deployments.

Installing the Robot using [UiPathStudio.msi](https://docs.uipath.com/installation-and-upgrade/v2020.10/docs/installing-the-robot#uipathstudiomsi) and selecting the **Unattended Robot** option deploys the Service Mode Robot by default. It can also be installed from the [Command Prompt](https://docs.uipath.com/installation-and-upgrade/v2020.10/docs/studio-command-line-parameters).

A [Service Mode](updating-the-robot.md#service-mode-robot) Robot can easily be updated, or converted to a User Mode Robot.

In this deployment type, the Robot is listed under Windows services in `services.msc`.

Jobs can be started from Orchestrator even if a user is logged in or not.

The Service Mode Robot gets installed for all users on that machine. When the Service Mode Robot is installed on Windows Server machines, you can run concurrent unattended jobs with automatic session management. This represents a seamless unattended automation scenario. You can have concurrent jobs with the User Mode Robot on a Windows Server, but not automatic session management. You can find out how to set up a Windows Server for your Robots [on this page](setting-up-windows-server-for-high-density-robots.md).

The `UiPath.settings` file is installed in the `%ProgramData%\UiPath` folder.

Packages are downloaded in the `%userprofile%\.nuget\packages` folder by default. However, you can specify a custom location when you install Studio from the [Command Prompt](https://docs.uipath.com/installation-and-upgrade/v2020.10/docs/studio-command-line-parameters). If you are not connected to Orchestrator, the packages you publish from Studio are saved in the `%ProgramData%\UiPath\Packages` folder, and become visible in the Robot Tray. Find out more about [Managing Packages](https://docs.uipath.com/studio/v2020.10/docs/managing-activities-packages).

## User Mode Robot

The User Mode Robot is best suited in attended automation scenarios. It runs under the user that starts it, and has the exact rights as that particular user.

Installing the Robot using [UiPathStudioSetup.exe](installing-the-robot.md) deploys the User Mode Robot. When installing with UiPathStudio.msi, selecting the **Assistant** option deploys the User Mode Robot by default. It can also be deployed when installing from the [Command Prompt](https://docs.uipath.com/installation-and-upgrade/v2020.10/docs/studio-command-line-parameters).

A User Mode Robot can easily be updated, or converted to a [Service Mode Robot](https://docs.uipath.com/installation-and-upgrade/v2020.10/docs/updating-the-robot#robot-as-a-windows-service).

In this deployment type, the Robot is not listed under the Windows services.

In order to start a job from Orchestrator, the user must be logged in.

The `UiPath.settings` file is installed in the `%LocalAppData%\UiPath` folder.

Please note that for the Service Mode Robot deployment, the `.xaml` files are only readable by the user that executes them.

By default, packages are downloaded in the `%userprofile%\.nuget\packages` folder. This location can be specified when you install Studio from the [Command Prompt](https://docs.uipath.com/installation-and-upgrade/v2020.10/docs/studio-command-line-parameters). If you are not connected to Orchestrator, the packages you publish from Studio are saved in the `%ProgramData%\UiPath\Packages` folder, and become visible in the Robot Tray. Find out more about [Managing Packages](https://docs.uipath.com/studio/v2020.10/docs/managing-activities-packages).

Please note that packages downloaded by the Service Mode Robot cannot be run by the User Mode Robot.