Node fs Error: EPERM: operation not permitted, open

Question

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?

Solution 1

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.

Solution 2

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

Solution 3

On my Windows 10 machine, I encountered this error when running an old Node JS project. I think Node version 10.16.

In any case, it was trying to modify a dotfile in my project. Be sure that the file isn't hidden on Windows. After unchecking the hidden option in the file properties pop up. Everything worked.

So to fix:

1. Right click file in Windows Explorer
2. Select properties
3. Uncheck Hidden
4. Click Ok
5. Re-run your command.

Solution 4

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

Solution 5

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

Solution:

Just restart your code editor/ terminal Or Restart your computer

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