Windows Event ID 5056 – Microsoft-Windows-Kernel-General: System Time Change Detected

Start by examining the specific details of Event ID 5056 to understand what triggered the time change.

1. Open Event Viewer by pressing Win + R, typing eventvwr.msc, and pressing Enter
2. Navigate to Windows Logs → System
3. Filter for Event ID 5056 by right-clicking System → Filter Current Log → enter 5056 in Event IDs field
4. Double-click on recent 5056 events to view details including previous time, new time, and process information
5. Check the General tab for time change magnitude and the Details tab for additional context

Look for patterns in timing - frequent events may indicate NTP issues, while isolated events during boot are typically normal.

Use PowerShell to analyze Event ID 5056 patterns and extract detailed information programmatically.

1. Open PowerShell as Administrator
2. Query recent time change events:
   

   Get-WinEvent -FilterHashtable @{LogName='System'; Id=5056} -MaxEvents 20 | Format-Table TimeCreated, LevelDisplayName, Message -Wrap

3. Extract specific time change details:
   

   Get-WinEvent -FilterHashtable @{LogName='System'; Id=5056} -MaxEvents 10 | ForEach-Object { [xml]$xml = $_.ToXml(); Write-Output "Time: $($_.TimeCreated) - Previous: $($xml.Event.EventData.Data[0].'#text') - New: $($xml.Event.EventData.Data[1].'#text')" }

4. Check for events in the last 24 hours:
   

   Get-WinEvent -FilterHashtable @{LogName='System'; Id=5056; StartTime=(Get-Date).AddDays(-1)}

This method helps identify frequency patterns and correlate time changes with other system events.

Examine W32Time service settings to determine if time synchronization is causing frequent Event ID 5056 entries.

1. Check current time service status:
   

   w32tm /query /status

2. View time service configuration:
   

   w32tm /query /configuration

3. Check NTP server sources:
   

   w32tm /query /peers

4. Examine time service registry settings:
   

   Get-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\Services\W32Time\Parameters"

5. Test time synchronization manually:
   

   w32tm /resync /rediscover

Identify and validate the time sources causing system time changes to ensure they're legitimate and properly configured.

1. Enable detailed W32Time logging:
   

   w32tm /debug /enable /file:C:\temp\w32time.log /size:10000000 /entries:0-300

2. Check current time source and stratum:
   

   w32tm /query /source

   
   

   w32tm /query /status | findstr "Stratum\|Source"

3. Verify NTP server accessibility:
   

   w32tm /stripchart /computer:time.windows.com /samples:5

4. Review time service event logs:
   

   Get-WinEvent -LogName "Microsoft-Windows-Time-Service/Operational" -MaxEvents 50

5. Disable debug logging when finished:
   

   w32tm /debug /disable

This method helps identify whether time changes are coming from legitimate sources or potentially malicious time manipulation.

Set up comprehensive monitoring for time changes to detect anomalies and maintain audit compliance.

1. Enable advanced audit policy for time changes:
   

   auditpol /set /subcategory:"System Integrity" /success:enable /failure:enable

2. Create a scheduled task to monitor frequent time changes:
   

   $action = New-ScheduledTaskAction -Execute "PowerShell.exe" -Argument "-Command Get-WinEvent -FilterHashtable @{LogName='System'; Id=5056; StartTime=(Get-Date).AddMinutes(-5)} | Out-File C:\logs\timechanges.log -Append"

   
   

   $trigger = New-ScheduledTaskTrigger -Once -At (Get-Date) -RepetitionInterval (New-TimeSpan -Minutes 5)

   
   

   Register-ScheduledTask -TaskName "MonitorTimeChanges" -Action $action -Trigger $trigger

3. Configure Event Viewer custom view for time-related events:
   Navigate to Event Viewer → Custom Views → Create Custom View → filter for Event IDs 5056, 1, 12, 129
4. Set up Windows Event Forwarding for centralized monitoring:
   

   winrm quickconfig

   
   

   wecutil qc