# Installation and system requirements

Source: [https://docs.virtosoftware.com/docs/alerts-and-reminders-by-virto/installation-and-system-requirements/](https://docs.virtosoftware.com/docs/alerts-and-reminders-by-virto/installation-and-system-requirements/)
Product: Virto Alerts & Reminders App
Updated: 2026-08-12

Installation of the app requires a tenant administrator.

A tenant administrator (Global Administrator) is the person responsible for managing the entire Microsoft 365 tenant. For an official overview of roles with tenant admin access, including the Global Administrator, see [Microsoft’s documentation](https://learn.microsoft.com/en-us/azure/service-health/admin-access-reference).

## Pages
- [Installing the Alerts and Reminders app](https://docs.virtosoftware.com/docs/alerts-and-reminders-by-virto/installation-and-system-requirements/installing-the-alerts-and-reminders-app/index.md) — Add the app to a SharePoint site through New, App and the SharePoint Store entry for Virto Alerts.
- [License status](https://docs.virtosoftware.com/docs/alerts-and-reminders-by-virto/installation-and-system-requirements/license-status/index.md) — The Subscription tab shows the licence status; ten alerts per site collection are free of charge.
- [System requirements](https://docs.virtosoftware.com/docs/alerts-and-reminders-by-virto/installation-and-system-requirements/system-requirements/index.md) — Alerts & Reminders runs on SharePoint Online and Microsoft 365; the supported browsers are listed here.
- [Updating the App](https://docs.virtosoftware.com/docs/alerts-and-reminders-by-virto/installation-and-system-requirements/updating-the-app/index.md) — The app moved from an add-in to Azure authorization, so updating requires granting the new permissions.
- [Permissions Required for Application](https://docs.virtosoftware.com/docs/alerts-and-reminders-by-virto/installation-and-system-requirements/permissions-required-for-application/index.md) — The app needs both delegated and application permissions, listed here for the tenant administrator.
- [Deleting the App](https://docs.virtosoftware.com/docs/alerts-and-reminders-by-virto/installation-and-system-requirements/deleting-the-app/index.md) — Removing Alerts & Reminders properly: the app must be active first, so reinstall it before deleting.