Troubleshooting 403 Forbidden Errors in Web Messaging Deployments

Hello everyone! I am a Genesys PS consultant and I am currently helping a client deploy Genesys Cloud Web Messaging on their corporate website. We have configured the ‘Web Messaging’ deployment in the Admin menu and added their domain to the ‘Supported Domains’ list. However, when we try to load the messaging snippet on their site, we get a ‘403 Forbidden’ error in the browser console. I have already confirmed that the domain name matches exactly what we entered in the Genesys Cloud configuration. Are there any hidden restrictions or CORS settings that I might be missing?

I have seen these 403 errors break our sentiment analysis integration. Emi24, you should check if the client’s website is using ‘Sub-Domains’. If the messaging snippet is loaded on support.example.com but you only whitelisted example.com, it will fail. You must add every specific sub-domain to the list, or use a wildcard like *.example.com if your organization’s security policy allows it.

Hello! I am a WFM analyst and I love seeing these digital deployments! To follow up on Aki88, please also check your ‘Content Security Policy’ (CSP) headers on the client’s web server. If their CSP is too restrictive, it might be blocking the browser from connecting to the Genesys Cloud WebSocket endpoints, even if your domain whitelisting is correct. You need to ensure that *.mypurecloud.com is added to the connect-src and script-src directives in their CSP.