What versions of ArcGIS Enterprise Web Adaptor (IIS) will be supported on .NET 10?

Microsoft has released the latest long-term release of .NET (10) as of November 2025. This version of .NET 10 is not certified with the ArcGIS Enterprise 12.0 Web Adaptor (IIS), which was released on November 19th.

Esri plans to certify the following versions of the ArcGIS Enterprise Web Adaptor (IIS) that are in General Availability and Extended support: 11.1, 11,3, 11.5. When released, ArcGIS Enterprise 12.1 will support the ArcGIS Web Adaptor (IIS) on .NET 10.  Customers can expect the certification process with .NET 10 to be completed by the end of 2026.

Certification ensures that the integration meets all quality, security, and performance benchmarks, providing organizations with confidence for production deployments.

As .NET evolves, our goal is to ensure ArcGIS Enterprise continues to provide a reliable and future-ready platform for developers and administrators. Testing will confirm compatibility and performance across supported versions. If you have questions or feedback, please reach out to Technical Support.