Event ID 1101: Audit events have been dropped by the transport
Windows Event ID Lookup: What Windows event IDs mean: 4625, 4624, 4740, 6008, 41, 7045, 1102 and 3,000 more, with Windows' own message text, the fields and what to check.
Look up a Windows event ID from Event Viewer, a SIEM alert or a log export: what it means, the fields it records, and what to check. Many IDs are used by more than one source (event 41 is both a Kernel-Power crash and a boot error), so every definition is shown, the one people usually mean first. The message text is Windows' own, read from the event providers of Windows 10.0.26200.0, 2026-10-28; the notes are ours, based on Microsoft's security auditing reference.
Audit events have been dropped by the transport.
Event 1101
Eventlog
Security / System log
Error
The computer will be locked because the user has exceeded the maximum number of failed logon attempts allowed on this computer.
Event 1101
Winlogon
System log
Warning
The processing of Group Policy failed.
Event 1101
GroupPolicy
System log
Error