A corrupted .NET cache or pending Windows Update. Fix: Run Windows Update fully, then use the Microsoft .NET Framework Repair Tool (official tool from Microsoft).

Unlike newer versions (like .NET 4.x), .NET 3.5 does not have its own independent Common Language Runtime (CLR). Instead, it relies on the engine. Because 3.0 and 3.5 simply add new libraries (assemblies) on top of that base, they cannot function without the 2.0 components present. Key Features by Layer

by adding new libraries and assemblies. Because of this architecture, installing .NET 3.5 automatically enables support for applications built for .NET 2.0 and 3.0. Key Features Introduced in 3.5 Language Integrated Query (LINQ):

A high-level object-relational mapping (ORM) framework that simplifies how developers access and manipulate database data. New Class Libraries:

Without this specific version, these programs will crash on launch or display an error message stating that a required component is missing.

For IT professionals, you can use DISM with the installation media (ISO) of Windows:

// router.js onPageChange = (options) => { ⋮ salsify.events.navigation(options) } // addToCart.js onAddToCart = (options) => { ⋮ salsify.events.addToCart(options) } // view.html