How to get Firefox 35.0.1 / Firefox 31.8.0 ESR to work on Windows 2000 without Extended Kernel!

Make sure you have CFF Explorer and 7-Zip installed.

Requirements: Service Pack 4 + Update Rollup 1

Notes: 

1) It is recommended that you replace the ws2_32.dll, iphlpapi.dll, and wtsapi32.dll from Windows 2000 Extended Kernel via Recovery Console.

2.0) Make sure that advapixp.dll, kernelxp.dll, shellxp.dll, userxp.dll, and rpcxp4.dll wrappers are in the Firefox 35.0.1 folder.

2.1) Make sure that advapixp.dll, kernelxp.dll, shellxp.dll, and rpcxp4.dll wrappers are in the Firefox 31.8.0 ESR folder.

Open firefox.exe with CFF Explorer, go the optional header for firefox.exe and other executables

Change the MinorOperatingSystemVersion and MinorSubsystemVersion from 0001 to 0000.

And then port winsta.dll from Windows 2000 Extended Kernel to the Firefox folder:

Batch Script for the Firefox 35.0.1;

@echo off

rplbfile accessiblemarshal.dll kernel32.dll kernelxp.dll

rplbfile breakpadinjector.dll kernel32.dll kernelxp.dll

rplbfile crashreporter.exe kernel32.dll kernelxp.dll

rplbfile d3dcompiler_43.dll kernel32.dll kernelxp.dll

rplbfile d3dcompiler_46.dll kernel32.dll kernelxp.dll

rplbfile firefox.exe kernel32.dll kernelxp.dll

rplbfile freebl3.dll kernel32.dll kernelxp.dll

rplbfile gkmedias.dll kernel32.dll kernelxp.dll

rplbfile icuin52.dll kernel32.dll kernelxp.dll

rplbfile icuuc52.dll kernel32.dll kernelxp.dll

rplbfile libegl.dll kernel32.dll kernelxp.dll

rplbfile libglesv2.dll kernel32.dll kernelxp.dll

rplbfile maintenanceservice.exe kernel32.dll kernelxp.dll

rplbfile maintenanceservice_installer.exe kernel32.dll kernelxp.dll

rplbfile mozalloc.dll kernel32.dll kernelxp.dll

rplbfile mozglue.dll kernel32.dll kernelxp.dll

rplbfile mozjs.dll kernel32.dll kernelxp.dll

rplbfile msvcp100.dll kernel32.dll kernelxp.dll

rplbfile msvcr100.dll kernel32.dll kernelxp.dll

rplbfile nss3.dll kernel32.dll kernelxp.dll

rplbfile nssdbm3.dll kernel32.dll kernelxp.dll

rplbfile plugin-container.exe kernel32.dll kernelxp.dll

rplbfile plugin-hang-ui.exe kernel32.dll kernelxp.dll

rplbfile sandboxbroker.dll kernel32.dll kernelxp.dll

rplbfile softokn3.dll kernel32.dll kernelxp.dll

rplbfile updater.exe kernel32.dll kernelxp.dll

rplbfile webapprt-stub.exe kernel32.dll kernelxp.dll

rplbfile webapp-uninstaller.exe kernel32.dll kernelxp.dll

rplbfile wow_helper.exe kernel32.dll kernelxp.dll

rplbfile xul.dll kernel32.dll kernelxp.dll

rplbfile accessiblemarshal.dll advapi32.dll advapixp.dll

rplbfile breakpadinjector.dll advapi32.dll advapixp.dll

rplbfile crashreporter.exe advapi32.dll advapixp.dll

rplbfile d3dcompiler_43.dll advapi32.dll advapixp.dll

rplbfile d3dcompiler_46.dll advapi32.dll advapixp.dll

rplbfile firefox.exe advapi32.dll advapixp.dll

rplbfile freebl3.dll advapi32.dll advapixp.dll

rplbfile gkmedias.dll advapi32.dll advapixp.dll

rplbfile icuin52.dll advapi32.dll advapixp.dll

rplbfile icuuc52.dll advapi32.dll advapixp.dll

rplbfile libegl.dll advapi32.dll advapixp.dll

rplbfile libglesv2.dll advapi32.dll advapixp.dll

rplbfile maintenanceservice.exe advapi32.dll advapixp.dll

rplbfile maintenanceservice_installer.exe advapi32.dll advapixp.dll

rplbfile mozalloc.dll advapi32.dll advapixp.dll

rplbfile mozglue.dll advapi32.dll advapixp.dll

rplbfile mozjs.dll advapi32.dll advapixp.dll

rplbfile msvcp100.dll advapi32.dll advapixp.dll

rplbfile msvcr100.dll advapi32.dll advapixp.dll

rplbfile nss3.dll advapi32.dll advapixp.dll

rplbfile nssdbm3.dll advapi32.dll advapixp.dll

rplbfile plugin-container.exe advapi32.dll advapixp.dll

rplbfile plugin-hang-ui.exe advapi32.dll advapixp.dll

rplbfile sandboxbroker.dll advapi32.dll advapixp.dll

rplbfile softokn3.dll advapi32.dll advapixp.dll

rplbfile updater.exe advapi32.dll advapixp.dll

rplbfile webapprt-stub.exe advapi32.dll advapixp.dll

rplbfile webapp-uninstaller.exe advapi32.dll advapixp.dll

rplbfile wow_helper.exe advapi32.dll advapixp.dll

rplbfile xul.dll advapi32.dll advapixp.dll

rplbfile accessiblemarshal.dll shell32.dll shellxp.dll

rplbfile breakpadinjector.dll shell32.dll shellxp.dll

rplbfile crashreporter.exe shell32.dll shellxp.dll

rplbfile d3dcompiler_43.dll shell32.dll shellxp.dll

rplbfile d3dcompiler_46.dll shell32.dll shellxp.dll

rplbfile firefox.exe shell32.dll shellxp.dll

rplbfile freebl3.dll shell32.dll shellxp.dll

rplbfile gkmedias.dll shell32.dll shellxp.dll

rplbfile icuin52.dll shell32.dll shellxp.dll

rplbfile icuuc52.dll shell32.dll shellxp.dll

rplbfile libegl.dll shell32.dll shellxp.dll

rplbfile libglesv2.dll shell32.dll shellxp.dll

rplbfile maintenanceservice.exe shell32.dll shellxp.dll

rplbfile maintenanceservice_installer.exe shell32.dll shellxp.dll

rplbfile mozalloc.dll shell32.dll shellxp.dll

rplbfile mozglue.dll shell32.dll shellxp.dll

rplbfile mozjs.dll shell32.dll shellxp.dll

rplbfile msvcp100.dll shell32.dll shellxp.dll

rplbfile msvcr100.dll shell32.dll shellxp.dll

rplbfile nss3.dll shell32.dll shellxp.dll

rplbfile nssdbm3.dll shell32.dll shellxp.dll

rplbfile plugin-container.exe shell32.dll shellxp.dll

rplbfile plugin-hang-ui.exe shell32.dll shellxp.dll

rplbfile sandboxbroker.dll shell32.dll shellxp.dll

rplbfile softokn3.dll shell32.dll shellxp.dll

rplbfile updater.exe shell32.dll shellxp.dll

rplbfile webapprt-stub.exe shell32.dll shellxp.dll

rplbfile webapp-uninstaller.exe shell32.dll shellxp.dll

rplbfile wow_helper.exe shell32.dll shellxp.dll

rplbfile xul.dll shell32.dll shellxp.dll

rplbfile accessiblemarshal.dll user32.dll userxp.dll

rplbfile breakpadinjector.dll user32.dll userxp.dll

rplbfile crashreporter.exe user32.dll userxp.dll

rplbfile d3dcompiler_43.dll user32.dll userxp.dll

rplbfile d3dcompiler_46.dll user32.dll userxp.dll

rplbfile firefox.exe user32.dll userxp.dll

rplbfile freebl3.dll user32.dll userxp.dll

rplbfile gkmedias.dll user32.dll userxp.dll

rplbfile icuin52.dll user32.dll userxp.dll

rplbfile icuuc52.dll user32.dll userxp.dll

rplbfile libegl.dll user32.dll userxp.dll

rplbfile libglesv2.dll user32.dll userxp.dll

rplbfile maintenanceservice.exe user32.dll userxp.dll

rplbfile maintenanceservice_installer.exe user32.dll userxp.dll

rplbfile mozalloc.dll user32.dll userxp.dll

rplbfile mozglue.dll user32.dll userxp.dll

rplbfile mozjs.dll user32.dll userxp.dll

rplbfile msvcp100.dll user32.dll userxp.dll

rplbfile msvcr100.dll user32.dll userxp.dll

rplbfile nss3.dll user32.dll userxp.dll

rplbfile nssdbm3.dll user32.dll userxp.dll

rplbfile plugin-container.exe user32.dll userxp.dll

rplbfile plugin-hang-ui.exe user32.dll userxp.dll

rplbfile sandboxbroker.dll user32.dll userxp.dll

rplbfile softokn3.dll user32.dll userxp.dll

rplbfile updater.exe user32.dll userxp.dll

rplbfile webapprt-stub.exe user32.dll userxp.dll

rplbfile webapp-uninstaller.exe user32.dll userxp.dll

rplbfile wow_helper.exe user32.dll userxp.dll

rplbfile xul.dll user32.dll userxp.dll

rplbfile xul.dll uxtheme.dll uxthexp.dll

rplbfile winsta.dll rpcrt4.dll rpcxp4.dll

Batch Script for the Firefox 31.8.0 ESR;

@echo off

rplbfile accessiblemarshal.dll kernel32.dll kernelxp.dll

rplbfile breakpadinjector.dll kernel32.dll kernelxp.dll

rplbfile crashreporter.exe kernel32.dll kernelxp.dll

rplbfile d3dcompiler_43.dll kernel32.dll kernelxp.dll

rplbfile firefox.exe kernel32.dll kernelxp.dll

rplbfile freebl3.dll kernel32.dll kernelxp.dll

rplbfile gkmedias.dll kernel32.dll kernelxp.dll

rplbfile icuin52.dll kernel32.dll kernelxp.dll

rplbfile icuuc52.dll kernel32.dll kernelxp.dll

rplbfile libegl.dll kernel32.dll kernelxp.dll

rplbfile libglesv2.dll kernel32.dll kernelxp.dll

rplbfile maintenanceservice.exe kernel32.dll kernelxp.dll

rplbfile maintenanceservice_installer.exe kernel32.dll kernelxp.dll

rplbfile mozalloc.dll kernel32.dll kernelxp.dll

rplbfile mozglue.dll kernel32.dll kernelxp.dll

rplbfile mozjs.dll kernel32.dll kernelxp.dll

rplbfile msvcp100.dll kernel32.dll kernelxp.dll

rplbfile msvcr100.dll kernel32.dll kernelxp.dll

rplbfile nss3.dll kernel32.dll kernelxp.dll

rplbfile nssdbm3.dll kernel32.dll kernelxp.dll

rplbfile plugin-container.exe kernel32.dll kernelxp.dll

rplbfile plugin-hang-ui.exe kernel32.dll kernelxp.dll

rplbfile sandboxbroker.dll kernel32.dll kernelxp.dll

rplbfile softokn3.dll kernel32.dll kernelxp.dll

rplbfile updater.exe kernel32.dll kernelxp.dll

rplbfile webapprt-stub.exe kernel32.dll kernelxp.dll

rplbfile webapp-uninstaller.exe kernel32.dll kernelxp.dll

rplbfile wow_helper.exe kernel32.dll kernelxp.dll

rplbfile xul.dll kernel32.dll kernelxp.dll

rplbfile accessiblemarshal.dll advapi32.dll advapixp.dll

rplbfile breakpadinjector.dll advapi32.dll advapixp.dll

rplbfile crashreporter.exe advapi32.dll advapixp.dll

rplbfile d3dcompiler_43.dll advapi32.dll advapixp.dll

rplbfile firefox.exe advapi32.dll advapixp.dll

rplbfile freebl3.dll advapi32.dll advapixp.dll

rplbfile gkmedias.dll advapi32.dll advapixp.dll

rplbfile icuin52.dll advapi32.dll advapixp.dll

rplbfile icuuc52.dll advapi32.dll advapixp.dll

rplbfile libegl.dll advapi32.dll advapixp.dll

rplbfile libglesv2.dll advapi32.dll advapixp.dll

rplbfile maintenanceservice.exe advapi32.dll advapixp.dll

rplbfile maintenanceservice_installer.exe advapi32.dll advapixp.dll

rplbfile mozalloc.dll advapi32.dll advapixp.dll

rplbfile mozglue.dll advapi32.dll advapixp.dll

rplbfile mozjs.dll advapi32.dll advapixp.dll

rplbfile msvcp100.dll advapi32.dll advapixp.dll

rplbfile msvcr100.dll advapi32.dll advapixp.dll

rplbfile nss3.dll advapi32.dll advapixp.dll

rplbfile nssdbm3.dll advapi32.dll advapixp.dll

rplbfile plugin-container.exe advapi32.dll advapixp.dll

rplbfile plugin-hang-ui.exe advapi32.dll advapixp.dll

rplbfile sandboxbroker.dll advapi32.dll advapixp.dll

rplbfile softokn3.dll advapi32.dll advapixp.dll

rplbfile updater.exe advapi32.dll advapixp.dll

rplbfile webapprt-stub.exe advapi32.dll advapixp.dll

rplbfile webapp-uninstaller.exe advapi32.dll advapixp.dll

rplbfile wow_helper.exe advapi32.dll advapixp.dll

rplbfile xul.dll advapi32.dll advapixp.dll

rplbfile accessiblemarshal.dll shell32.dll shellxp.dll

rplbfile breakpadinjector.dll shell32.dll shellxp.dll

rplbfile crashreporter.exe shell32.dll shellxp.dll

rplbfile d3dcompiler_43.dll shell32.dll shellxp.dll

rplbfile firefox.exe shell32.dll shellxp.dll

rplbfile freebl3.dll shell32.dll shellxp.dll

rplbfile gkmedias.dll shell32.dll shellxp.dll

rplbfile icuin52.dll shell32.dll shellxp.dll

rplbfile icuuc52.dll shell32.dll shellxp.dll

rplbfile libegl.dll shell32.dll shellxp.dll

rplbfile libglesv2.dll shell32.dll shellxp.dll

rplbfile maintenanceservice.exe shell32.dll shellxp.dll

rplbfile maintenanceservice_installer.exe shell32.dll shellxp.dll

rplbfile mozalloc.dll shell32.dll shellxp.dll

rplbfile mozglue.dll shell32.dll shellxp.dll

rplbfile mozjs.dll shell32.dll shellxp.dll

rplbfile msvcp100.dll shell32.dll shellxp.dll

rplbfile msvcr100.dll shell32.dll shellxp.dll

rplbfile nss3.dll shell32.dll shellxp.dll

rplbfile nssdbm3.dll shell32.dll shellxp.dll

rplbfile plugin-container.exe shell32.dll shellxp.dll

rplbfile plugin-hang-ui.exe shell32.dll shellxp.dll

rplbfile sandboxbroker.dll shell32.dll shellxp.dll

rplbfile softokn3.dll shell32.dll shellxp.dll

rplbfile updater.exe shell32.dll shellxp.dll

rplbfile webapprt-stub.exe shell32.dll shellxp.dll

rplbfile webapp-uninstaller.exe shell32.dll shellxp.dll

rplbfile wow_helper.exe shell32.dll shellxp.dll

rplbfile xul.dll shell32.dll shellxp.dll

rplbfile xul.dll uxtheme.dll uxthexp.dll

rplbfile winsta.dll rpcrt4.dll rpcxp4.dll

Once done, delete the rplbfile.exe and kdwfix.cmd files.

And on the firefox folder, right click on firefox.exe --> Send To --> Desktop (create shortcut), rename it to Mozilla Firefox.

Once done, you have Firefox 35.0.1 & 31.8.0 ESR working on Windows 2000 without Extended Kernel.

*“Note: This setup uses ws2_32.dll, iphlpapi.dll, wtsapi32.dll, and winsta.dll from the 2000 KernelEx project. No proprietary files are redistributed in this guide.”*

This guide is intended for educational and compatibility research purposes only. It does not redistribute or modify the official Firefox 35.0.1 source code, nor does it alter any Mozilla licensing terms. All credit for the compatibility wrappers from the mp10en2k package belongs to blackwingcat (MSFN). Firefox is a registered trademark of the Mozilla Foundation. Use this information at your own risk. This setup is not supported by Mozilla and is meant solely for legacy system preservation and testing. 

You are on your own doing this.