| Event Id | 10021 |
| Source | Microsoft-Windows-Hyper-V-VMMS |
| Description | Failed to create security identifier mapping from '%5' to %6. |
| Event Information | According to Microsoft : Cause : This event is logged when failed to create security identifier mapping. Resolution : Reimage server A possible security compromise has been created. Completely reimage the server (sometimes called a bare metal restoration), install a new operating system, and enable the Hyper-V role.A possible security compromise has been created. Completely reimage the server (sometimes called a bare metal restoration), install a new operating system, and enable the Hyper-V role. |
| Reference Links | Event ID 10021 from Microsoft-Windows-Hyper-V-VMMS |
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