Windows Event Viewer Logs (C:\Windows\System32\winevt\Logs)

Bottom Line: It is safe to delete .evtx log files in winevt\Logs. Deleting event logs will NOT break Windows, but you will lose historical diagnostic audit records.

What are Windows Event Viewer Logs?

Located at C:\Windows\System32\winevt\Logs, Windows uses this directory to store binary .evtx logs tracking system startup, application crashes, security logins, and hardware driver alerts.

On servers or workstations running active logging policies, this directory can balloon to 5 GB to 20 GB+.

Can You Delete Event Viewer Logs?

✅ Yes, safe to delete.

• No System Breakage: Windows creates new log streams dynamically as new events occur.
• Audit Impact: Security compliance software or sysadmins investigating past crash history won’t find archived log events prior to the purge date.

How to Safely Clear Event Logs

Method 1: Event Viewer GUI

1. Press Win + R, type eventvwr.msc, and press Enter.
2. Right-click Windows Logs > Application or System.
3. Select Clear Log… (optionally save before clearing).

Method 2: PowerShell (Clear All Logs)

Get-WinEvent -ListLog * -EA SilentlyContinue | ForEach-Object { Clear-EventLog -LogName $_.LogName }