How to Register the Vauz Autofill Browser Extension

Overview

The Vauz Autofill browser extension works by establishing a secure connection with the main Vauz desktop application. This connection allows the extension to securely access your password vault and autofill credentials on websites. The registration process involves cryptographic key exchange and user approval to ensure security

Prerequisites

Before registering the extension, ensure you have:

Vauz Desktop Application: The main Vauz password manager app must be installed and running on your computer
Browser Extension: The Vauz Autofill extension installed from your browser's extension store
Active Vauz Account: You should be logged into your Vauz account in the desktop application

Step-by-Step Registration Process

Step 1: Install the Extension

Step 2: Initiate Registration

Click the Vauz extension icon in your browser toolbar
You'll see a welcome screen with a Begin binding button
Click Begin binding to start the registration process

Extension registration screen

Step 3: Approve the Connection

When you click Begin binding, the following happens automatically:

The extension attempts to connect to the Vauz desktop application using native messaging
The extension sends a registration request to the desktop app containing:
- A unique extension identifier
- The extension's public keys
- Metadata (extension name and origin)

Step 4: User Approval

A popup window will appear from your Vauz desktop application
The popup will ask: "Do you want to allow this extension to connect?"
Click Yes, Allow to approve the connection

Desktop approval popup

Step 5: Registration Complete

Once you approve the connection:

The desktop app sends back its public key to the extension
Both applications now have each other's public keys for secure communication
You'll see a success notification and be redirected to a "Thank You" page
The extension is now registered and ready to use

Registration success notification

What Happens During Registration

The registration process establishes a secure communication channel between the browser extension and desktop application using industry-standard cryptography:

RSA Key Exchange: Both applications exchange public keys for authentication and encryption
Native Messaging: Uses your browser's native messaging API to communicate between browser and desktop app
Secure Storage: Keys are stored securely in the browser's local storage
Unique Identification: Each extension installation gets a unique identifier

Troubleshooting Common Issues

Issue: Registration popup doesn't appear

Symptoms: Clicking Begin binding doesn't show the approval popup

Solutions by Browser:

Issue: Registration rejected

Symptoms: Notification says "Extension registration rejected by user"

Make sure you click Yes, Allow in the Vauz desktop popup
Try the registration process again
Check if another extension instance is already registered

Issue: Extension stops working after computer restart

Symptoms: Extension shows as registered but can't autofill passwords

Ensure Vauz desktop application starts automatically with your computer
Re-register the extension if the desktop app wasn't running during browser startup

See troubleshooting steps if the issue persists

Security Information

The Vauz extension uses multiple layers of security:

End-to-end Encryption: All communication between extension and desktop app is encrypted
Challenge-Response Authentication: Each credential request requires cryptographic proof
Domain Verification: Credentials are only filled on verified domains
User Approval: All connections require explicit user consent

Frequently Asked Questions

Q: Can I register multiple browsers with the same Vauz account?
A: Yes, each browser extension registers independently and can coexist

Q: What happens if I reinstall the extension?
A: You'll need to re-register it with the main Vauz desktop application

Q: Is the registration process secure?
A: Yes, it uses RSA key exchange and native messaging to establish a secure connection

Q: What if I deny the registration?
A: The extension will remain unregistered and cannot access your password vault

Need More Help?

If you're still having issues:

Contact Vauz support with your specific error messages and system information

Created on January 21, 2026Last updated on February 6, 2026

Autofill Extension How to Use the Vauz Autofill Browser Extension