# System requirements and installation

Source: [https://docs.virtosoftware.com/docs/kanban-board-on-premises/system-requirements-and-installation/](https://docs.virtosoftware.com/docs/kanban-board-on-premises/system-requirements-and-installation/)
Product: Kanban Board On-Premises
Updated: 2026-08-12

## Pages
- [Error “Sorry, apps are turned off”: what to do](https://docs.virtosoftware.com/docs/kanban-board-on-premises/system-requirements-and-installation/error-sorry-apps-are-turned-off-what-to-do/index.md) — Why SharePoint 2019 refuses the Kanban web part with the apps are turned off error, and how to fix it.
- [Expected outage](https://docs.virtosoftware.com/docs/kanban-board-on-premises/system-requirements-and-installation/expected-outage/index.md) — How long a farm is unavailable while the Kanban Board web part is installed or upgraded.
- [Installing the Virto Kanban Board SPFx web part](https://docs.virtosoftware.com/docs/kanban-board-on-premises/system-requirements-and-installation/installing-the-virto-kanban-board-spfx-web-part/index.md) — Installing the SPFx package so the board works on modern SharePoint 2019 and Subscription Edition pages.
- [Installing the Virto Kanban Board web part](https://docs.virtosoftware.com/docs/kanban-board-on-premises/system-requirements-and-installation/installing-the-virto-kanban-board-web-part/index.md) — Privileges and server access needed to run the Kanban Board setup, and the components it installs.
- [System and developer requirements](https://docs.virtosoftware.com/docs/kanban-board-on-premises/system-requirements-and-installation/system-and-developer-requirements/index.md) — Server and browser requirements, listed separately for each supported SharePoint release.