Windows Events — Event ID Reference & Troubleshooting
Complete Windows Event ID reference. Understand every system event, its causes and solutions to diagnose issues.
Windows Event ID 7045 – Service Control Manager: New Service Installation
Windows Event ID 7 – Kernel-General: Bad Block Detected on Device
Windows Event ID 1102 – Microsoft-Windows-Eventlog: Security Log Cleared
Windows Event ID 1006 – WinMgmt: WMI Performance Adapter Registration Failure
Windows Event ID 18 – Various Sources: Generic Application or Service Event
Our Windows Events reference centralizes documentation on Windows Event IDs. Each article explains a specific system event: what it means, its possible causes, and recommended troubleshooting steps. From Kernel-Power events to Application Error entries, find structured, verified guides to diagnose and resolve common and advanced Windows issues.
Windows Event ID 1 – Unknown: Generic System Event Logging
Event ID 1 from Unknown source represents generic system events that occur when Windows cannot identify the specific event source or when third-party applications generate basic logging entries.
Windows Event ID 1311 – MSI Installer: Product Installation Failure
Event ID 1311 indicates a Windows Installer (MSI) package failed to install or configure properly. This error typically occurs when the installer cannot access required files, encounters permission issues, or faces corrupted installation media during software deployment.
Windows Event ID 129 – Storahci: Reset to Device Issued by Port Driver
Event ID 129 indicates the Windows storage port driver issued a reset command to a storage device, typically due to unresponsive I/O operations or device communication failures.
Windows Event ID 4625 – Microsoft-Windows-Security-Auditing: An Account Failed to Log On
Event ID 4625 records failed logon attempts in Windows Security logs. Critical for detecting unauthorized access attempts, brute force attacks, and troubleshooting authentication issues across domain and local accounts.
Windows Event ID 1925 – MSExchange Store: Database Mount Failure or Corruption
Event ID 1925 indicates Microsoft Exchange Store service encountered a critical database mount failure or corruption issue, preventing mailbox databases from mounting properly during startup or maintenance operations.
Windows Event ID 1704 – Winlogon: User Profile Service Failed
Event ID 1704 indicates the User Profile Service failed to load a user profile, preventing successful user logon and potentially causing profile corruption or access issues.
Windows Event ID 98 – System: Processor Thermal Throttling Event
Event ID 98 indicates processor thermal throttling has occurred due to high CPU temperatures. This system-level event fires when Windows reduces CPU performance to prevent overheating damage.
Windows Event ID 12289 – Kernel-General: Memory Manager Performance Counter Update
Event ID 12289 indicates Windows Memory Manager has updated performance counters for memory allocation tracking. This informational event helps monitor system memory usage patterns and virtual memory operations.
Windows Event ID 1500 – Application Error: Application Crash or Hang Detection
Event ID 1500 indicates an application has crashed, hung, or encountered a critical error. This event helps administrators track application stability and identify problematic software components.
Windows Event ID 4771 – Microsoft-Windows-Security-Auditing: Kerberos Pre-authentication Failed
Event ID 4771 indicates a Kerberos pre-authentication failure, typically caused by incorrect passwords, expired accounts, or time synchronization issues between client and domain controller.
Windows Event ID 2088 – ESENT: Database Recovery Completed Successfully
Event ID 2088 indicates ESENT database engine has successfully completed database recovery operations after an unexpected shutdown or crash, confirming data integrity restoration.
Windows Event ID 33 – System: Time Service Provider Time Synchronization
Event ID 33 indicates Windows Time Service has successfully synchronized system time with an external time source or encountered synchronization issues during the process.
Windows Event ID 153 – Kernel-General: Memory Management Error
Event ID 153 indicates a kernel-level memory management error where Windows detected memory corruption or allocation failures, typically requiring immediate investigation to prevent system instability.
Windows Event ID 25 – Application Popup: System Process Terminated Unexpectedly
Event ID 25 indicates a critical system process has terminated unexpectedly, triggering Windows Error Reporting. This event typically signals driver issues, memory corruption, or system instability requiring immediate investigation.
Windows Event ID 8 – Kernel-General: Page Fault in Nonpaged Area
Event ID 8 indicates a critical page fault in the nonpaged memory area, typically caused by faulty drivers, hardware issues, or memory corruption that can lead to system instability.