Error: EPERM: operation not permitted, unlink 'D:\\Sources\\**\\node_modules\\fsevents\\node_modules\\abbrev\\package.json'

I just updated npm to 5.4.0.
Now, Whenever I want install a npm package I get the following error:

D:\Sources\DownloadCms\Md.Download\Web.Angular>npm install mds.angular.datetimepicker@latest --save
npm ERR! path D:\Sources\DownloadCms\Md.Download\Web.Angular\node_modules\fsevents\node_modules\abbrev\package.json
npm ERR! code EPERM
npm ERR! errno -4048
npm ERR! syscall unlink
npm ERR! Error: EPERM: operation not permitted, unlink 'D:\Sources\DownloadCms\Md.Download\Web.Angular\node_modules\fsevents\node_modules\abbrev\package.json'
npm ERR!     at Error (native)
npm ERR!  { Error: EPERM: operation not permitted, unlink 'D:\Sources\DownloadCms\Md.Download\Web.Angular\node_modules\fsevents\node_modules\abbrev\package.jso
n'
npm ERR!     at Error (native)
npm ERR!   stack: 'Error: EPERM: operation not permitted, unlink \'D:\\Sources\\DownloadCms\\Md.Download\\Web.Angular\\node_modules\\fsevents\\node_modules\\ab
brev\\package.json\'\n    at Error (native)',
npm ERR!   errno: -4048,
npm ERR!   code: 'EPERM',
npm ERR!   syscall: 'unlink',
npm ERR!   path: 'D:\\Sources\\DownloadCms\\Md.Download\\Web.Angular\\node_modules\\fsevents\\node_modules\\abbrev\\package.json' }
npm ERR!
npm ERR! Please try running this command again as root/Administrator.

npm ERR! A complete log of this run can be found in:
npm ERR!     C:\Users\Mohammad\AppData\Roaming\npm-cache\_logs\2017-09-03T03_25_50_432Z-debug.log

I'm dead sure, run CMD as administrator.

Also I checked D:\Sources\DownloadCms\Md.Download\Web.Angular\node_modules\fsevents\node_modules\abbrev\package.json\, package.json is not exist in path !

Edit: Upgrade to v5.4.1, still get the same error, even cannot work around with --no-optional :-(

It is an npm 5.4.0 issue https://github.com/npm/npm/issues/18287

Workarounds are

downgrade to 5.3
try running with --no-optional, i.e. npm install --no-optional

I was able to fix this by running the command prompt/bash as admin and closing VSCode! Seems like VSCode was locking some files. Potentially something else could be locking these files for you.

If you downgrade to 5.3 and still get the same error in Windows like me.
After hours working with npm versions I found the following solution:

1. Download latest recommended version of nodejs, these days is node-v6.11.3-x64
2. Uninstall nodejs with it.
3. Go to C:\Users\{YourUsername}\AppData\Roaming folder and delete npm and npm-cache folders
4. Run installer of nodejs again and install it
5 Update npm to 5.3 with npm i -g npm@5.3 command line

Now you should use npm without any issues.

Jason

I fixed by downgrading npm from 5.4.0 to version 5.3

npm i -g npm@5.3

I Hope this helps for you

xeiton

I had the same issue and all I needed to do was login to npm

npm login

or alternatively

npm add user // consult the documentation for the params

I tried this solution found at a How to fix Node.js blog

just use

npm cache clean

in windows if it refuses use

npm cache clean --force

I had the same problem on Windows.

The source of the problem is simple, it is access permission on folders and files.

In your project folder, you need

After cloning the project, change the properties of the folder and change the permissions of the user (give full access to the current user).
Remove the read-only option from the project folder. (Steps 1 and 2 take a long time because they are replicated to the entire tree below).
Inside the project folder, reinstall the node (npm install reinstall -g)
Disable Antivirus. (optional)
Disable Firewall. (optional)
Restart PC.
Clear the npm cache (npm clear)
Install the dependencies of your project (npm install)

After that, error "Error: EPERM: operation not permitted, unlink" will no longer be displayed.

Remember to reactivate the firewall and antivirus if necessary.

For me it worked in bash from git package try:

C:\Program Files\Git\bin\bash.exe

then:

npm install mds.angular.datetimepicker@latest

There seems to be many solutions out there that worked with downgrading npm versions. For me, the solution was

npm install -force

I tried the downgrading of npm versions, modifying my npm prefix config to match the npm directory, and clearing cache. None of these worked, but apparently they worked for others, so it may be worth a shot.

the same error comes to me when i update the npm version to the latest 5.4 downgrade to the version 5.3.0 is useful.the error comes from the npm 5.4,you can check it in the issuses in npm 5.4

npm install npm@5.3 -g

Fixed in NPM 5.6.0

Upgrade to NPM 5.6.0 solved problem for me.

I wanted to run npm install from within my external hard drive as this is where i saved my code workspace. Windows 10 OS.

But I was getting the same error as the original post.None of the previous answers worked for me, I tried all of them:

uninstalling nodejs then re-installing
uninstalling nodejs then downgrading/installing a lower version of nodejs.
npm install -force
deleting the folders from C:\Users{YourUsername}\AppData\Roaming ... npm and npm-cache then re-installing.
npm cache clean --force
npm cache clean
npm install --g or npm install --global

What worked for me was this:

copy the folder from C:\Program Files\nodejs to D:\Program Files\nodejs
Then go to Control Panel\System and Security\System
Advanced System Settings
Environment Variables
System Variables
Double click Path
Add a new path
D:\Program Files\nodejs
Click ok
restart PC.
try npm install from within D: Drive

For me on Windows the problem was too long path length. I moved the project to a smaller length path and it worked.

Please close all IDE like visual studio code. run npm install command through node.js command prompt. Enjoy !

Suresh Vanam

For windows,

Download latest recommended version of nodejs, these days is node-v6.11.3-x64
Uninstall nodejs with it.
Go to C:\Users\{YourUsername}\AppData\Roaming folder and delete npm and npm-cache folders
Run installer of nodejs again and install it
By default npm 3.10.10 should be installed along with node-v6.11.3-x64.
It worked for me with npm 3.10.10 but did not work with 5.3.X. Also it did not worked with higher versions of node (above node-v6.11.3-x64)

I had this logs in Windows. I did the following

Close Visual Studio Code
Run Command Line as admin

Joe Sleiman

npm cache verify solved my issue. I was doing: ng new my-app and I faced similar error

I have node version: 10.16.0
npm v 6.9.0

If all of the above failed to work for you, you might want to

restart your system
run command prompt as admin
run the npm command

My problem was executing the command (npm audit fix all). I solved it when closing VSCODE and re-executed the command without problems.

来源：https://stackoverflow.com/questions/46020018/error-eperm-operation-not-permitted-unlink-d-sources-node-modules-fseven

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