"Cannot initialize local storage without a `--localstorage-file` path" upon starting Neovim

[naortega]

Result from CocInfo

## versions

vim version: NVIM v0.11.5
node version: v25.2.0
coc.nvim version: 0.0.82-51d5b66 2025-11-03 20:01:55 +0800
coc.nvim directory: /home/nicolas/.config/nvim/plugged/coc.nvim
term: alacritty
platform: linux

## Log of coc.nvim

2025-11-12T13:41:28.975 ERROR (pid:16160) [extensions-manager] - Error on active extension coc-html: DOMException [SecurityError]: Cannot initialize local storage without a `--localstorage-file` path
    at Object.get [as localStorage] (node:internal/webstorage:28:17)
    at get localStorage (node:internal/util:660:20)
    at copyGlobalProperties (/home/nicolas/.config/nvim/plugged/coc.nvim/build/index.js:121230:31)
    at createSandbox (/home/nicolas/.config/nvim/plugged/coc.nvim/build/index.js:121266:3)
    at createExtension (/home/nicolas/.config/nvim/plugged/coc.nvim/build/index.js:121305:19)
    at /home/nicolas/.config/nvim/plugged/coc.nvim/build/index.js:122111:23
    at new Promise (<anonymous>)
    at Object.activate (/home/nicolas/.config/nvim/plugged/coc.nvim/build/index.js:122107:22)
    at ExtensionManager.activate (/home/nicolas/.config/nvim/plugged/coc.nvim/build/index.js:121935:25)
    at ExtensionManager.activateExtensions (/home/nicolas/.config/nvim/plugged/coc.nvim/build/index.js:121799:37)
2025-11-12T13:41:28.981 ERROR (pid:16160) [extensions-manager] - Error on active extension coc-marketplace: DOMException [SecurityError]: Cannot initialize local storage without a `--localstorage-file` path
    at Object.get [as localStorage] (node:internal/webstorage:28:17)
    at get localStorage (node:internal/util:660:20)
    at copyGlobalProperties (/home/nicolas/.config/nvim/plugged/coc.nvim/build/index.js:121230:31)
    at createSandbox (/home/nicolas/.config/nvim/plugged/coc.nvim/build/index.js:121266:3)
    at createExtension (/home/nicolas/.config/nvim/plugged/coc.nvim/build/index.js:121305:19)
    at /home/nicolas/.config/nvim/plugged/coc.nvim/build/index.js:122111:23
    at new Promise (<anonymous>)
    at Object.activate (/home/nicolas/.config/nvim/plugged/coc.nvim/build/index.js:122107:22)
    at ExtensionManager.activate (/home/nicolas/.config/nvim/plugged/coc.nvim/build/index.js:121935:25)
    at ExtensionManager.activateExtensions (/home/nicolas/.config/nvim/plugged/coc.nvim/build/index.js:121799:37)
2025-11-12T13:41:28.983 INFO (pid:16160) [plugin] - coc.nvim initialized with node: v25.2.0 after 105
2025-11-12T13:41:28.984 ERROR (pid:16160) [server] - unhandledRejection  Promise {
  <rejected> DOMException [SecurityError]: Cannot initialize local storage without a `--localstorage-file` path
      at Object.get [as localStorage] (node:internal/webstorage:28:17)
      at get localStorage (node:internal/util:660:20)
      at copyGlobalProperties (/home/nicolas/.config/nvim/plugged/coc.nvim/build/index.js:121230:31)
      at createSandbox (/home/nicolas/.config/nvim/plugged/coc.nvim/build/index.js:121266:3)
      at createExtension (/home/nicolas/.config/nvim/plugged/coc.nvim/build/index.js:121305:19)
      at /home/nicolas/.config/nvim/plugged/coc.nvim/build/index.js:122111:23
      at new Promise (<anonymous>)
      at Object.activate (/home/nicolas/.config/nvim/plugged/coc.nvim/build/index.js:122107:22)
      at ExtensionManager.activate (/home/nicolas/.config/nvim/plugged/coc.nvim/build/index.js:121935:25)
      at ExtensionManager.activateExtensions (/home/nicolas/.config/nvim/plugged/coc.nvim/build/index.js:121799:37)
} DOMException [SecurityError]: Cannot initialize local storage without a `--localstorage-file` path
    at Object.get [as localStorage] (node:internal/webstorage:28:17)
    at get localStorage (node:internal/util:660:20)
    at copyGlobalProperties (/home/nicolas/.config/nvim/plugged/coc.nvim/build/index.js:121230:31)
    at createSandbox (/home/nicolas/.config/nvim/plugged/coc.nvim/build/index.js:121266:3)
    at createExtension (/home/nicolas/.config/nvim/plugged/coc.nvim/build/index.js:121305:19)
    at /home/nicolas/.config/nvim/plugged/coc.nvim/build/index.js:122111:23
    at new Promise (<anonymous>)
    at Object.activate (/home/nicolas/.config/nvim/plugged/coc.nvim/build/index.js:122107:22)
    at ExtensionManager.activate (/home/nicolas/.config/nvim/plugged/coc.nvim/build/index.js:121935:25)
    at ExtensionManager.activateExtensions (/home/nicolas/.config/nvim/plugged/coc.nvim/build/index.js:121799:37)
2025-11-12T13:41:28.984 ERROR (pid:16160) [server] - unhandledRejection  Promise {
  <rejected> DOMException [SecurityError]: Cannot initialize local storage without a `--localstorage-file` path
      at Object.get [as localStorage] (node:internal/webstorage:28:17)
      at get localStorage (node:internal/util:660:20)
      at copyGlobalProperties (/home/nicolas/.config/nvim/plugged/coc.nvim/build/index.js:121230:31)
      at createSandbox (/home/nicolas/.config/nvim/plugged/coc.nvim/build/index.js:121266:3)
      at createExtension (/home/nicolas/.config/nvim/plugged/coc.nvim/build/index.js:121305:19)
      at /home/nicolas/.config/nvim/plugged/coc.nvim/build/index.js:122111:23
      at new Promise (<anonymous>)
      at Object.activate (/home/nicolas/.config/nvim/plugged/coc.nvim/build/index.js:122107:22)
      at ExtensionManager.activate (/home/nicolas/.config/nvim/plugged/coc.nvim/build/index.js:121935:25)
      at ExtensionManager.activateExtensions (/home/nicolas/.config/nvim/plugged/coc.nvim/build/index.js:121799:37)
} DOMException [SecurityError]: Cannot initialize local storage without a `--localstorage-file` path
    at Object.get [as localStorage] (node:internal/webstorage:28:17)
    at get localStorage (node:internal/util:660:20)
    at copyGlobalProperties (/home/nicolas/.config/nvim/plugged/coc.nvim/build/index.js:121230:31)
    at createSandbox (/home/nicolas/.config/nvim/plugged/coc.nvim/build/index.js:121266:3)
    at createExtension (/home/nicolas/.config/nvim/plugged/coc.nvim/build/index.js:121305:19)
    at /home/nicolas/.config/nvim/plugged/coc.nvim/build/index.js:122111:23
    at new Promise (<anonymous>)
    at Object.activate (/home/nicolas/.config/nvim/plugged/coc.nvim/build/index.js:122107:22)
    at ExtensionManager.activate (/home/nicolas/.config/nvim/plugged/coc.nvim/build/index.js:121935:25)
    at ExtensionManager.activateExtensions (/home/nicolas/.config/nvim/plugged/coc.nvim/build/index.js:121799:37)
2025-11-12T13:41:33.975 ERROR (pid:16160) [timing] - activate coc-html timeout after 5000ms
2025-11-12T13:41:33.980 ERROR (pid:16160) [timing] - activate coc-marketplace timeout after 5000ms
2025-11-12T13:41:40.950 INFO (pid:16160) [attach] - receive notification: showInfo []

Describe the bug

I will simply start Neovim, even with an empty buffer, and I get the following error:

[coc.nvim]: Unhandled response error 18 from language server: Cannot initialize local storage without a `--localstorage-file` path

Reproduce the bug

I simply created the mini.vim file recommended:

set nocompatible
set runtimepath^=~/.config/nvim/plugged/coc.nvim/
filetype plugin indent on
syntax on
set hidden

And ran nvim -u mini.vim and it output the error.

[andrecsilva]

I'm also having the same problem. Downgrading nodejs to v24.11.0 is serving as a temporary workaround for this issue.
I believe it's related to this issue/PR:
nodejs/node#60351

[naortega]

I'm also having the same problem. Downgrading nodejs to v24.11.0 is serving as a temporary workaround for this issue. I believe it's related to this issue/PR: nodejs/node#60351

Is that PR supposed to be solving this issue in a later version of NodeJS or did it cause this issue which now needs to be solved in CoC?

[andrecsilva]

I'm also having the same problem. Downgrading nodejs to v24.11.0 is serving as a temporary workaround for this issue. I believe it's related to this issue/PR: nodejs/node#60351

Is that PR supposed to be solving this issue in a later version of NodeJS or did it cause this issue which now needs to be solved in CoC?

I believe it's causing this issue, that PR is already in the latest version of node.

[Goku-San]

Hi, I just want to write as to follow this. I googled and I found that its nodejs causing the error.

[Alexey104]

Same problem. This is what helped to shut up the error:

local storage_file = vim.fn.stdpath('data') .. '/coc-localstorage'
vim.g.coc_node_args = { '--localstorage-file=' .. storage_file }

[naortega]

Same problem. This is what helped to shut up the error:

local storage_file = vim.fn.stdpath('data') .. '/coc-localstorage'
vim.g.coc_node_args = { '--localstorage-file=' .. storage_file }

Where do you add this? I've tried adding it to my init.vim, but it's not valid.

[Alexey104]

Where do you add this? I've tried adding it to my init.vim, but it's not valid.

It's lua. Not sure about VimScript, but I think something like this should do the same:

let storage_file = stdpath('data') . '/coc-localstorage'
let g:coc_node_args = ['--localstorage-file=' . storage_file]

[fannheyward]

Reproduced with Node v25.2.0. The v25.1.0 version works as expected.

[stefanhaerter]

@fannheyward Thank you very much for the fix!