Overview
Riva can encounter an unexpected HTML response while checking for the RivaConfiguration folder through Microsoft Graph. Riva cannot process this response, causing the folder lookup to fail during that synchronization cycle. This error is typically transient, and synchronization resumes successfully in subsequent cycles.
Cause
Riva received an HTML response instead of the expected Microsoft Graph response. The available logs do not identify the source of the unexpected response.
Troubleshooting
Check subsequent synchronization cycles
Allow the next synchronization cycle to run. If synchronization completes successfully, no further action is required.
If the error persists or synchronization does not resume, contact the Riva Technical Support Team. Include the full error message, relevant Riva logs, affected users, and the dates and times of the failures.