| Issue | Cause | Solution | | --- | --- | --- | | | Offline installer includes it, but registration fails. | Run sqlncli.msi manually from the \Prerequisites folder inside extracted installer. | | License activation loop | Expired trial or incorrect XML file. | Ensure you used the correct machine hash and that your license is valid. Contact SolarWinds support. | | IIS configuration error | Missing ASP.NET 4.8 or URL Rewrite module. | Install URL Rewrite from the \Redist folder manually (offline MSI included). | | Port conflict with existing web server | IIS already uses port 80/443. | Reconfigure NPM to use a custom port like 8443 during installation. | | Database connection timeout | SQL Server not configured for remote connections (even local). | Open SQL Server Configuration Manager > Enable TCP/IP > Restart SQL service. |
This article provides a deep dive into what the offline installer is, why you need it, how to obtain it, and step-by-step instructions for a silent, unattended installation. solarwinds npm offline installer
: Once files are installed, the Configuration Wizard will automatically launch to set up your database, website, and services. Activating Licenses Offline | Issue | Cause | Solution | |
Never try to use the web-based "Check for Updates" button inside an offline console. It will freeze or time out. | Ensure you used the correct machine hash