Node fs Error: EPERM: operation not permitted, open

I get this error in my app:

> Error: EPERM: operation not permitted, open 'C:\Program Files
> (x86)\Full Menu\db\main.json'

The app I have is built with electron-boilerplate. I am using this function to get the path to the root of the app:

path.dirname(process.execPath)

And this is the script that writes the file:

fs.writeFile(apath + '/db/' + elem + '.json', JSON.stringify(results)

I know what the problem is: permissions. But how could I get this working without running the app as an administrator?

I think that you must change the permissions recursively to the file so the user executing your script can read / write this file.

[To see links please register here]

For the benefit of searchers; I has this error. I added full permissions for `Everyone` as a test, but that didn't fix it. The issue was that the file was set to `readonly` (by source control).

Unchecking the `readonly` option in the file properties fixed the issue.

i had to run the node command prompt as administrator and that fixed the issue.

> If you use windows 10, you must turn off Ransomware protection. Ransomware protection will prevent all folder and file changes.You can turn off it in Windows Security Center. See screenshot below:

[![enter image description here][1]][1]


[1]:

I had the error because i have already open the file before

var stream = fs.createWriteStream(outputFileName, {flags:'a'})
var output = fs.createWriteStream(outputFileName, {flags:'a'})

Restarting my computer fixed this problem for me.

I had this issue too. I'm using TFS (or VSO, Azure DevOps, etc.) for source control. I was trying to compile from .scss to .css and it couldn't open my .css. I just needed to right-click on my .css file and Check Out for Edit...

If you have the file that you can't open or modify mounted as a volume in docker restarting docker should fix the issue.

I face this issue when I was deleting a file/folder.

**Solution:**

Just restart your code editor/ terminal
Or
Restart your computer