PozoAppCommonUpdatedCode/REINSTALL-IISNODE.md

Reinstall iisnode - Step by Step

Current Issue

iisnode error 0x00000002 - can't execute Node.js

Solution: Reinstall iisnode

Step 1: Uninstall Current iisnode

1. Control Panel → Programs → Uninstall
2. Find "iisnode" → Uninstall
3. Or manually remove from: C:\Program Files\iisnode

Step 2: Download Fresh iisnode

• Go to: https://github.com/Azure/iisnode/releases
• Download: iisnode-full-v0.2.26-x64.msi (or latest x64 version)
• Make sure it's x64 (not x86)

Step 3: Install

1. Run the .msi file as Administrator
2. Follow installation wizard
3. Make sure "Register iisnode with IIS" is checked

Step 4: Restart

• Restart IIS: iisreset
• Or restart computer

Step 5: Verify Installation

1. Check: C:\Program Files\iisnode\iisnode.dll exists
2. IIS Manager → Server → Modules → Should see "iisnode"
3. Test with hello.cjs

Step 6: If Still Error

Check Node.js version compatibility:

• iisnode v0.2.26 works with Node.js 12-18
• If Node.js 19+, might need newer iisnode version

Alternative: Try Without nodeProcessCommandLine

Sometimes letting iisnode find Node.js automatically works better.

Remove from web.config:

nodeProcessCommandLine="C:\Program Files\nodejs\node.exe"

Let iisnode use PATH to find Node.js.