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After you install Microsoft Windows NT 4.0 Service Pack 5 on a server computer configured with Microsoft Cluster Server (MSCS), the cluster service logs the following event in the System Event log every four hours:
Event 1015 No checkpoint record was found in the log file W:\MSCS\chkBC1.tmp, the checkpoint file is invalid or was deleted.
The cluster servers are still working normal.
The error event is unnecessarily logged every four hours. Occurrences of this event at four hour intervals may be ignored and do not indicate a problem.
Windows NT Server, Cluster Server, or Workstation 4.0To resolve this problem, obtain the latest service pack for Windows NT 4.0 or the individual software update. For information on obtaining the latest service pack, please go to:
Windows NT Server 4.0, Terminal Server EditionTo resolve this problem, obtain the latest service pack for Windows NT Server 4.0, Terminal Server Edition. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
(https://support.microsoft.com/kb/152734/EN-US/ )How to Obtain the Latest Windows NT 4.0 Service Pack
To work around this problem, check the Event Viewer prior to the four-hour interval and see if you are receiving this event from a real cluster problem.
Microsoft has confirmed that this is a problem in Windows NT 4.0 and Windows NT Server 4.0, Terminal Server Edition.
This problem was first corrected in Windows NT Server 4.0 Service Pack 6 and Windows NT Server 4.0, Terminal Server Edition Service Pack 6.