Hello,

I see this often when running your Product updater, or it may come from within VS 2026 when it prompts to update projects. I had Telerik UI for Blazor 13.2 installed, updated using the product updater and got the prompt for the project updater and now 13.3.0 is active. The problem though is when you add a new version entry in the nuget package sources the older version(s) are not being removed. This breaks the build, it will fail to restore packages, etc.