I have developed a custom Genesys Messenger widget deployment for our customer portal. The widget uses a custom theme with branded colors and a custom launcher icon. Everything was working correctly until we updated the deployment configuration yesterday to add a new supported language.
After saving the deployment, the widget reverted to the default Genesys theme. Our custom CSS overrides and the custom launcher icon are gone. The deployment configuration screen still shows our custom theme selected, but the actual rendered widget on the page uses the default blue theme.
I have cleared browser cache. I have tried in incognito mode. I have regenerated the deployment snippet and re-embedded it. The default theme persists.
Our deployment snippet:
<script type="text/javascript" charset="utf-8">
(function (g, e, n, s, y, c) {
g['_genesysJs'] = s;
g[s] = g[s] || function () { (g[s].q = g[s].q || []).push(arguments); };
g[s].t = 1 * new Date();
y = e.createElement(n); y.async = 1; y.src = c;
var i = e.getElementsByTagName(n)[0]; i.parentNode.insertBefore(y, i);
})(window, document, 'script', 'Genesys',
'https://apps.mypurecloud.com/genesys-bootstrap/genesys.min.js');
Genesys('subscribe', 'Messenger.ready', function () {
console.log('Messenger widget loaded');
});
Genesys('command', 'Messenger.open');
</script>
The deployment ID and environment are correct. Has anyone experienced theme reversion after a deployment config change?
Your snippet is missing the deployment configuration object. The bootstrap script loads the default configuration unless you explicitly pass your deployment ID and environment.
Replace your snippet initialization with:
Genesys('command', 'Database.set', {
messaging: {
customAttributes: {}
}
});
Actually, the real issue is simpler. You need to pass the deploymentId in the Genesys configuration call:
Genesys('configure', {
environment: 'prod-euw1',
deploymentId: 'your-deployment-uuid-here'
});
Without the explicit deploymentId, the bootstrap script falls back to matching based on the allowed domain list. If you have multiple deployments on the same domain (which happens frequently in dev/staging/prod setups), it might be picking up the wrong deployment after you modified one of them. The theme is tied to the deployment, so a different deployment means a different theme.
Had this same problem last month. The deployment ID fix is correct. But there is another layer - Genesys caches the widget configuration at their CDN edge for up to 15 minutes.
Even after fixing the snippet and passing the correct deployment ID, you might still see the old theme for up to 15 minutes due to the CDN cache TTL. You can force a cache bypass during development by appending a version query parameter to the bootstrap URL:
https://apps.mypurecloud.com/genesys-bootstrap/genesys.min.js?v=20250515
Remove the query parameter once you have confirmed the theme is working, because it defeats the CDN caching and adds latency for your customers on every page load.
Both points above are valid. I want to add a quality management perspective to this.
When evaluating agent interactions that come through the Messenger widget, the QM evaluation form has a section for “brand compliance” that checks whether the widget displayed the correct branding to the customer. If your widget theme reverted to the default Genesys blue during a production incident like this, any QM evaluations conducted on interactions from that period should be flagged for re-evaluation.
From a technical standpoint, you can identify exactly which interactions were affected by querying the conversation metadata. Interactions where the widget loaded with the default theme will have the participant attribute genesys.messenger.deployment.theme set to default rather than your custom theme name.
GET /api/v2/analytics/conversations/details/query
{
"filter": {
"type": "and",
"clauses": [
{ "type": "dimension", "dimension": "mediaType", "operator": "matches", "value": "message" },
{ "type": "dimension", "dimension": "messageType", "operator": "matches", "value": "webmessaging" }
]
}
}
Check the participants[].attributes in each result for the theme value to identify affected conversations.