Windows ERROR_ACCESS_DENIED: Fixing File and Folder Permission Issues

The ERROR_ACCESS_DENIED on Windows occurs when an application or user tries to access a file, folder, or resource without sufficient permissions.

This error is common when dealing with system files or directories like C:/Windows/System32 or user-restricted folders.

The solution starts with identifying the affected resource and the required permissions.

Open File Explorer, right-click the resource, and navigate to the Properties > Security tab.

Ensure your user account is listed under “Group or user names” and has the necessary permissions checked.

If permissions are grayed out, click on “Advanced,” and take ownership of the file by selecting your user account.

Additionally, ensure that the file or directory is not marked as read-only unless necessary.

If working in an environment with administrative restrictions, run the application as an administrator.

To make system-wide permission changes, adjust group policies using gpedit.msc, but use caution as improper changes can impact system stability.