Two points to note:

.NET 4.0/4.5.1 runtime applications ARE supported on IIS 6.0 (Windows Server 2003) .

.NET 4.0 appears as an extension in IIS 6.  You do need to ENABLE this extension. The Web Service Extensions node (right below the Web Sites Node) lets you view and change the extensions that are allowed or prohibited. Simply “allow” .NET 4 and your .NET 4.0/4.5.1 applications should work fine.

Anuj holds professional certifications in Google Cloud, AWS as well as certifications in Docker and App Performance Tools such as New Relic. He specializes in Cloud Security, Data Encryption and Container Technologies.

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Anuj Varma – who has written posts on Anuj Varma, Hands-On Technology Architect, Clean Air Activist.