# Installation

Source: [https://docs.virtosoftware.com/docs/virto-cascade-lookup-web-part/installation/](https://docs.virtosoftware.com/docs/virto-cascade-lookup-web-part/installation/)
Product: Virto Cross-Site Lookup Web Part
Updated: 2026-08-12

This section describes how to install, upgrade, uninstall, or contact Support for the Virto SharePoint Cross Site Lookup.

## Pages
- [Installing Virto Cross Site Lookup](https://docs.virtosoftware.com/docs/virto-cascade-lookup-web-part/installation/installing-virto-cross-site-lookup/index.md) — Privileges and server access needed to run the Cross Site Lookup setup, and the components it installs.
- [License Activation](https://docs.virtosoftware.com/docs/virto-cascade-lookup-web-part/installation/license-activation/index.md) — Activating the Cross Site Lookup licence; the full procedure lives in the Virto License Manager documentation.
- [Uninstalling Virto Cross Site Lookup](https://docs.virtosoftware.com/docs/virto-cascade-lookup-web-part/installation/uninstalling-virto-cross-site-lookup/index.md) — Removing Cross Site Lookup: run Setup.exe from the CrossSiteLookupSelector archive and choose Remove when prompted.
- [Upgrading Virto Cross Site Lookup](https://docs.virtosoftware.com/docs/virto-cascade-lookup-web-part/installation/upgrading-virto-cross-site-lookup/index.md) — Upgrading Cross Site Lookup: run setup, tick Upgrade at step three, and note what happens to an activated licence.
- [Virto Cross Site Lookup Feature](https://docs.virtosoftware.com/docs/virto-cascade-lookup-web-part/installation/virto-cross-site-lookup-feature/index.md) — What the feature adds to a plain lookup: cross-collection references, duplicate removal and find-as-you-type.