The vendor has published 1 unique mention(s) for this bug: 1. After you upgrade your WEM infrastructure service to 2112 or later, the following error might appear in the Windows Event Log even if users experience no issues with their environment: System.NotImplementedException: The method or operation is not implemented. Latest urls for this bug: 1. https://docs.citrix.com/us/en/workspace-environment-management/2206/whats-new/fixed-issues.html