To fix this, first, check that the computer you are using is connected to the internet, and there are no firewalls blocking port 30304. When accessing the V-Ray Online License Server (OLS) at you will see an orange light next to ‘Online Licensing’ if it isn’t working correctly.

V-Ray License Server – Online Licensing Not Working If you have tried the above, but are still unable to connect, it would be worth temporarily disabling any firewalls you may have on your computer or wider network to check that they aren’t blocking the connection. When signed in with the correct email address, you should be able to see the status of your licences in the OLS, whether they are ‘in use’ or ‘available’. If you are sure you’re using the correct email address already, it is worth signing out and back in again to see if that resolves the issue. If you are unsure what this is, it is usually the email address you used to place your order with us. You must be signed in with the email address that holds your licence.If you see an orange or red light next to Online Licensing, please refer to the section below “ V-Ray License Server – Online Licensing Not Working“.You should have a green light at the top once you have signed in. Ensure Online Licensing is enabled in the OLS.You can find the OLS by going to If your web browser does not find a page, you need to install the OLS. This is usually installed as a part of the V-Ray software installation, but can also be downloaded from your Chaos account and installed individually. Check you have the Online License Server (OLS) installed.

If your software cannot find a valid licence, it will not let you render. For whatever reason, your software is not able to connect to the Chaos license server to verify your details.

Vray licence