How to Install AutoCAD 2000 on Modern Windows Systems

AutoCAD 2000 setup halted due to incompatible OS: "AutoCAD supports Windows NT 4.0, Windows NT 5.0, Windows 95, and Windows 98"

Many AutoCAD 2000 users rely on this legacy software for their workflows, but installing it on modern Windows versions often results in errors like:

Or:

AutoCAD 2000 setup halted due to incompatible OS: "AutoCAD supports Windows NT 4.0, Windows NT 5.0, Windows 95, and Windows 98"

AutoCAD 2000 setup halted due to incompatible OS: "AutoCAD supports Windows NT 4.0, Windows NT 5.0, Windows 95, and Windows 98"

Fortunately, with the right steps, you can still install and run AutoCAD 2000 smoothly.


Step-by-Step Installation Guide

Prerequisites


Installing AutoCAD 2000

  1. Launch the Longbow Converter

    • Double-click the Longbow Converter shortcut on your desktop.
  2. Prepare the Installation

    • Insert your AutoCAD 2000 CD.
    • Navigate to the “Old AutoCAD Installer Reviver” tab.
    • Click the ‘…’ button and select your AutoCAD 2000 CD.
    • Click “Run Old Installer”.
  3. Follow the Migration Wizard

    • Click “Install 2000” as usual.
    • Wait at least 45 minutes for the setup.exe to fully load—patience is key.
  4. Custom Installation Directory

    • During setup, when prompted for the installation folder, manually set the path to c:acad2000 (not the default Program Files (x86)AutoCAD 2000).

    Setting AutoCAD 2000 custom install directory to c:acad2000Setting AutoCAD 2000 custom install directory to c:acad2000

    • Ignore the error “Cannot create folder AutoCAD 2000”—you’ll create the shortcut manually later.
    • Do not reboot if prompted.
  5. Finalize the Installation

    • Close the setup program completely.
    • Return to the Longbow Converter and ensure the “Old AutoCAD Program Reviver” tab displays “SUCCESS” in green.
    • Reboot your PC.
  6. Run AutoCAD 2000

    • Navigate to c:acad2000 using Windows Explorer.
    • Double-click acad.exe to launch AutoCAD 2000.
    • If you want a desktop shortcut, create it manually.

Installing Additional Components

AutoCAD 2000 Express Tools

If you encounter the “Missing Application: RTEXT” Proxy dialog, install Express Tools Volume 9:

  • Follow the guide here.

ObjectDBX Classes Object Enabler

  1. Download the ObjectDBX Enabler.
  2. Extract to c:Autodesk.
  3. Use the Longbow Converter:
    • Select the “Old AutoCAD Installer Reviver” tab.
    • Pick the c:AutodeskAutoCAD 2000 – ObjectDBX Classes Object Enabler folder.
    • Click “Run Old Installer” and proceed normally.

AEC Object Enabler 2.11

  1. Download AEC Object Enabler 2.11.
  2. Extract to c:AutodeskAutoCAD2000-AEC211.
  3. Repeat the Longbow Converter steps as above.

Architectural Object Enabler 3.02

  1. Download Architectural Object Enabler 3.02.
  2. Extract and install normally.

Service Packs

  • Service Pack 1:

    • Download SP1.
    • Extract to c:AutodeskspAutoCAD 2000 sp1.
    • Use the Longbow Converter to run the installer (wait up to 45 minutes).
  • Service Pack 2:

    • Download SP2.
    • Extract to c:AutodeskspAutoCAD 2000 sp2.
    • Repeat the Longbow Converter steps.

3D Graphics System Update

  1. Download the 3D Graphics Update.
  2. Extract to c:Autodeskupdate.
  3. Use the Longbow Converter to run the installer (wait up to 45 minutes).

Troubleshooting Common Issues

IssueSolution
Setup doesn’t start after 45 minutesUse the Longbow Converter’s 3rd tab to fix the c:acad2000 folder, then reboot.
Missing DLL errors (e.g., aclst15.dll, ACUTIL15.dll)Apply the same fix as above. If unresolved, contact support.
Proxy Warning Dialogs in DWG filesInstall all Service Packs as described.
WinHelp() error when pressing F1Install Microsoft’s WinHlp32.exe.
Calcomp Digitizer not workingFollow this guide.
“Wrong OS” error persistsCopy the AutoCAD 2000 CD to your PC and restart from Step 1. If the issue remains, update the Longbow Converter.
AutoCAD crashes on File > Open/SaveRefer to this troubleshooting guide.

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