Multiple 'Event 81' messages are logged in Windows Event logs on Windows Server 2019 while running backups
Article ID: 100046942
Updated On:
Description
Error Message
Log Name: System
Source: Microsoft-Windows-FailoverClustering-Client
Date: 1/22/2020 8:04:46 PM
Event ID: 81
Task Category: None
Level: Error
Keywords: (1024)
User: SYSTEM
Computer: Server
Description:
LogExtendedErrorInformation (978):
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="Microsoft-Windows-FailoverClustering-Client" Guid="{a82fda5d-745f-409c-b0fe-18ae0678a0e0}" />
<EventID>81</EventID>
Backup Exec is a cluster aware application, so it uses Windows Cluster APIs extensively to check if a server is part of a cluster. On Windows Server 2019 and above, the Cluster API generates Event-81 if the server is not a part of a cluster.
Solution
Backup Exec 21.1 now includes changes to help mitigate the errors generated by the Cluster API.
NOTE: Event ID 81 errors may still occur if there are any other issues related to the cluster.
Issue/Introduction
Additional Information
