Hello Sebatian !
Thank you for posting on Microsoft Learn.
After checkingn, I found out that several users have reported issues accessing Azure AI Assistants, encountering timeouts and errors both via the API and the Assistant Playground UI.
Similar issues have been observed in various regions, such as East US 2, where users experienced significant latency and timeouts with OpenAI services. citeturn0search8
Currently, there is no official acknowledgment or detailed information regarding these issues on the Azure status history page.Try to reach out to Azure support team if you issue still persists.
https://learn.microsoft.com/en-us/answers/questions/2200682/assistant-timeout-or-bad-request