Hi, when I want to open node-red, I faced an error. Can you help me to resolve it?? TypeError: Cannot read property 'forEach' of undefined at Object.addModule (C:\Users\Admin\AppData\Roaming\npm\node_modules\node-red\node_modules@node-red\registry\lib\registry.js:186:27) at C:\Users\Admin\AppData…

Did you create a new local user? If not, do that now and switch to it. Then reinstall Node-RED with npm install -g node-red --production --unsafe-perm. Then from a command line, run node-red. That will create a new userDir folder at %USERPROFILE%\.node-red (if using cmd.exe, for PowerShell, you ca…

Instead of guessing, why not remove your custom node and see if Node-RED will start up?

I have tried that by inserting remove npm node-red-contrib-... C:\Users\Admin>npm remove node-red-contrib-netio npm WARN saveError ENOENT: no such file or directory, open 'C:\Users\Admin\package.json' npm WARN enoent ENOENT: no such file or directory, open 'C:\Users\Admin\package.json' npm WARN…

[image] Mas: C:\Users\Admin Packages are not installed in that folder. With a typical Windows Node-RED installation, your userDir is: %USERPROFILE%\.node-red and that is where your user installed packages should be. You can see that when Node-RED starts, it tells you where things are. Also, …

I have done that to remove the custom node, but still it does not work!

Then maybe time to get drastic. Try creating a new local user and then run node-red under the new user. If that still doesn't work, you need to remove node-red completely and then reinstall.

Could you please tell me how to remove node-red completely?

npm remove -g node-red should do the job. If that fails, you can manually delete the C:\Users\Admin\AppData\Roaming\npm\node_modules\node-red folder.

I applied npm remove -g node-red and now in `C:\Users\Admin\AppData\Roaming\npm\node_modules' node-red folder is not there, so it means that it is completely removed, right? so what is next?

Thank you. It works now :slight_smile:

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