The vendor has published 1 unique mention(s) for this bug: 1. When a session is being recorded, the following warning message appears in an event viewer log on the Session Recording Agent: Received message for unknown session X. This warning may occur if the Session recording Agent has been restarted while ICA® sessions were still active. This issue does not impact the functioning of Session Recording. Latest urls for this bug: 1. https://docs.citrix.com/us/en/session-recording/1912-ltsr/what-s-new/cumulative-update-2/fixed-issues.html