---
title: Next-Gen WAF for IIS 2.0.0
summary: null
url: >-
  https://www.fastly.com/documentation/reference/changes/2020/03/ngwaf-module-iis-2.0.0
---

- Improved the installer, working on older versions of Windows back to Server 2008r2
- Changed the default behavior to install as per-machine (instead of per-user). Because
  of this, previous installs may need to be uninstalled first. A warning will appear
  during installation if this is the case.
- Changed default agent rpc-address from port 9999 to port 737 to match the agent default
- Updated the installer to detect non-default agent port configurations (i.e., detect old
  port 9999 configurations) and configure the IIS module to match
- Replaced the PowerShell utilities with a new `SigsciCtl.exe` utility to aid in
  manual configuration and diagnostics