When to Use Whitelisting and Ports

When to Use Whitelisting and Ports for Topaz Labs Apps

Only follow this guidance if you are using a VPN, proxy, firewall, or managed network.

If you are on a normal home or personal network, you usually do not need to do any of this.

This applies to:

• Topaz Video
• Topaz Gigapixel
• Topaz Photo

Start here: Do you need this?

You may need whitelisting only if:

• You are connected through a VPN
• You are behind a corporate, school, or government network
• You use a proxy or network firewall
• You run enterprise antivirus or endpoint security

If none of these apply, stop here — this article is likely not relevant to your issue.

What problems this solves

Network restrictions can block Topaz services and cause:

• Model downloads that stall or fail
• Activation or license verification errors
• Update checks that never complete
• Blank or loading screens inside the app

Domains to whitelist (if applicable)

If your network restricts outbound traffic, allow the following.

Primary domains

• topazlabs.com
• topaz-labs.net
• www.topazlabs.com

Additional required services

• downloads.topazlabs.com
• models.topazlabs.com
• models-bal.topazlabs.com
• veai-models.topazlabs.com
• api.topaz-labs.net
• et.topazlabs.com
• api.topazlabs.com
• topaz-labs.net

Using wildcards (recommended)

If your firewall or antivirus supports wildcards, this is the simplest setup:

• topazlabs.com
• topaz-labs.net
• *.topazlabs.com
• *.topaz-labs.net

This helps prevent future connection issues.

Required ports

Allow outbound traffic on:

• Port 80 (HTTP)
• Port 443 (HTTPS)

No inbound ports are needed.

What this enables

These network allowances let Topaz apps:

• Activate and validate licenses
• Download AI models
• Check for updates
• Access required cloud services

If issues continue

After making changes:

• Restart the app
• Restart the computer
• Reconnect the VPN or network

If the issue persists, Topaz Support can help confirm whether connectivity is the cause.