Managing Credentials with cmdkey (with examples)

The cmdkey command is a powerful tool in Windows environments for creating, viewing, and deleting stored user names and passwords that manage access to various servers and network resources. By handling credentials using cmdkey, users can automate and streamline login processes, enhancing both security and convenience. More information about this command can be found in the official documentation .

Use case 1: List all user credentials

Code:

cmdkey /list

Motivation:

It is crucial to have a clear overview of existing stored credentials on a system, especially in environments where multiple users or applications access shared resources. By listing all user credentials, an administrator can verify which credentials are actively stored, assess whether any need to be updated or removed, and ensure that unauthorized credentials are not present. This practice helps maintain a secure and efficient network environment.

Explanation:

• /list: This argument instructs cmdkey to enumerate and display all the stored credentials on the machine. With this list, users and administrators can inspect details about each credential, such as the target name and the user name associated with it.

Example output:

Currently stored credentials:
    Target: Domain:target=TERMSRV/server_name
    User: localmachine\username
    Credential: type=Domain Password

Use case 2: Store credentials for a user that accesses a server

Code:

cmdkey /add:server_name /user:user_name

Motivation:

Storing credentials for a user who frequently accesses a particular server ensures seamless access without the need to repeatedly enter login details. This is especially beneficial for users accessing network resources in a business environment, as it reduces time spent on login procedures and minimizes the risk of password-related errors.

Explanation:

• /add:server_name: This specifies the target server for which the credentials are being stored. The server_name can be a network server, a remote desktop server, or any network resource requiring authentication.

• /user:user_name: This denotes the user name that corresponds to the credentials being stored. It allows the cmdkey to associate the credentials with this specific user for the targeted server, allowing automatic authentication in future accesses.

Example output:

CMDKEY: Credential added successfully.

Use case 3: Delete credentials for a specific target

Code:

cmdkey /delete target_name

Motivation:

Periodically deleting credentials is a best practice in managing security, especially when credentials are outdated, no longer needed, or if a user has left the organization. This step prevents unauthorized access and limits the possibility of credentials being exploited by malicious actors.

Explanation:

• /delete target_name: This command involves specifying the target name for the credentials you wish to remove. The target_name refers to the specific server or network resource where the credentials are stored. By deleting these credentials, access to this resource will require re-authentication, which can prevent potential unauthorized access.

Example output:

CMDKEY: Credential deleted successfully.

Conclusion:

The cmdkey command is an indispensable tool for Windows users responsible for managing network security and seamless access. Through listing, storing, and deleting credentials, users can efficiently manage their authentication needs, safeguarding network resources against unauthorized access and promoting a secure, streamlined login experience across multiple systems.