I’m facing the same issue while using MS Graph to create a webinar (v1.0/solutions/virtualEvents/webinars), and I want to know if you managed to fix the problem.

Here’s my current setup:

Request Body:

{
"displayName": "The Impact of Tech on Our Lives",
"description": {
    "contentType": "text",
    "content": "Discusses how technology has changed the way we communicate."
},
"startDateTime": {
    "dateTime": "2024-03-30T10:00:00",
    "timeZone": "UTC"
},
"endDateTime": {
    "dateTime": "2024-03-30T17:00:00",
    "timeZone": "UTC"
},
"audience": "everyone"
}

Headers:

• Authorization: Bearer {TOKEN}
• Content-Type: application/json

Error Response:

{
"error": {
    "code": "BadRequest",
    "message": "Bad Request",
    "innerError": {
        "date": "2025-01-28T10:31:56",
        "request-id": "...",
        "client-request-id": "..."
    }
}
}

Did you manage to resolve this issue using the virtual event webinar Graph APIs, or find another workaround?

Any advice would be appreciated!