Introduction With the release of SPFx 1.20.0 in September 2024, I decided to upgrade an existing SPFx solution to the latest version following a post by Microsoft 365 & Power Platform Community on Linkedin This process can be challenging, especially when dealing with dependency version conflicts. In this blog post, I’ll walk you through the steps to upgrade your SPFx solution to version 1.20.0, including installing Node.js 18.18.0, using the CLI for Microsoft 365 to generate upgrade instructions, and addressing common issues.