Solarwinds Npm 2020.2.6 System Requirements -

Use PowerShell 5.1 or later; version 2020.2.6 recommends using RestrictedLanguage mode for target servers to improve security.

Even if your server meets requirements, the web interface requires a modern browser: solarwinds npm 2020.2.6 system requirements

The Orion Platform 2020.2.6 runs on Windows Server. It is recommended to use the latest service packs and security updates. Windows Server 2019 Windows Server 2016 Use PowerShell 5

For a deep dive into specific sizing or cloud deployment (Azure/AWS), check the official SolarWinds Success Center . Use PowerShell 5.1 or later