Windows npm EPERM Error: Permission Denied

After running a custom npm configuration command, npm fails on Windows with an EPERM error when attempting to create ‘C:\Dev\Storage’. Clearing configuration files didn’t help. Suggestions?

# Update npm configuration
npm config set directory "C:\NewTools"

# Simulated error output
echo Error: EPERM: permission denied while creating 'C:\NewTools\LocalFolder'

# Attempt cleanup of local settings
del "C:\Users\YourProfile\AppData\Local\npm-settings" /s /q

hey, i had a simlar issue. running the cmd as admin and double-checkin the folder’s permission usually does the trick. also try cleanin npm cache if that doesn’t work, might be a lingering lock on the folder.

I once faced a similar problem when experimenting with a custom npm directory device. The crux was not solely npm itself but rather how Windows managed the folder permissions when configurations got altered from defaults. I had to tweak the user access right directly through the folder properties in Windows and even disable inheritance to set explicit permissions. I discovered that using an updated Node and npm version also helped clear out unexpected permission conflicts. Ultimately, a detailed audit of local security settings was instrumental in resolving the issue.

The resolution might involve adjusting file system permissions at a deeper level than just running as administrator. In my experience, running npm commands in a thoroughly elevated command prompt was not enough when underlying file access controls conflicted with npm’s operations. I ended up using icacls to reset permissions on the parent folder, ensuring that my user account had explicit rights to create and modify subdirectories. This approach is beneficial when Windows security policies inadvertently block folder creation. Reviewing the inherited permissions and applying explicit ACL entries ultimately resolved the EPERM error.