firebase-tools: Emulator socket fails on Windows with EACCES

[REQUIRED] Environment info

**firebase-tools:**6.9.2

**Platform:**Windows

[REQUIRED] Test case

With 6.9.2 I try to emulate functions locally and get this whenever I call a function:

`! Your requested “node” version “8” doesn’t match your global version “10”

• functions: Emulator started at http://localhost:5000 i functions: Watching “[removed]” for Cloud Functions… ! Default “firebase-admin” instance created! i functions: HTTP trigger initialized at http://localhost:5000/[removed]/us-central1/helloWorld i functions: Beginning execution of “helloWorld” ! Default “firebase-admin” instance created!

events.js:174 throw er; // Unhandled ‘error’ event ^

Error: listen EACCES: permission denied C:\Users\Work\AppData\Local\Temp\firebase_emulator_invocation_10596.sock at Server.setupListenHandle [as _listen2] (net.js:1253:19) at listenInCluster (net.js:1318:12) at Server.listen (net.js:1416:5) at Function.listen (C:\Users\Work\AppData\Roaming\npm\node_modules\firebase-tools\node_modules\express\lib\application.js:618:24) at Promise (C:\Users\Work\AppData\Roaming\npm\node_modules\firebase-tools\lib\emulator\functionsEmulatorRuntime.js:359:46) at new Promise (<anonymous>) at C:\Users\Work\AppData\Roaming\npm\node_modules\firebase-tools\lib\emulator\functionsEmulatorRuntime.js:332:15 at Generator.next (<anonymous>) at C:\Users\Work\AppData\Roaming\npm\node_modules\firebase-tools\lib\emulator\functionsEmulatorRuntime.js:7:71 at new Promise (<anonymous>) Emitted ‘error’ event at: at emitErrorNT (net.js:1297:8) at process._tickCallback (internal/process/next_tick.js:63:19) at Function.Module.runMain (internal/modules/cjs/loader.js:757:11) at startup (internal/bootstrap/node.js:283:19) at bootstrapNodeJSCore (internal/bootstrap/node.js:622:3)`

This behaviour was not present in 6.8.0 and I just verified that 6.8.0 works.

I even reinstalled Windows to double check (don’t worry, it was time to do it anyway).

Note that I’m running firebase tools as the administrator, so not sure where the permission denied error is coming from.

Also note that when I run a basic express server:

`const express = require(‘express’) const app = express() const port = “c:\temp\f.sock”

app.get(‘/’, (req, res) => res.send(‘Hello World!’))

app.listen(port, () => console.log(Example app listening on port ${port}!))`

I get the same error.

[REQUIRED] Steps to reproduce

1. Install firebase tools@6.9.2
2. Init a new project with just functions
3. Uncomment the helloWorld function example
4. Emulate the function locally with firebase serve command
5. Call the localhost function url
6. Notice the crash

[REQUIRED] Expected behavior

The function should run.

[REQUIRED] Actual behavior

The function crashes.