This site is only for Avast Business products. For articles on AVG Business products, see AVG Business Help.

Base Antivirus Logs

This Article Applies to:

  • Avast Business Hub
  • Avast Business On-Premise Console
  • Essential/Premium/Ultimate Business Security
  • Small Office Protection

If the Avast Support Tool fails, or does not gather all of the logs requested by Business Technical Support, you can manually gather the logs to send to Support.

Antivirus Clients Unmanaged

  • C:\ProgramData\AVAST Software\Avast\log\
  • C:\ProgramData\AVAST Software\Persistent Data\Avast\Logs\

Antivirus Clients Managed

  • C:\Program Files (x86)\AVAST Software\Business Agent\log.txt
  • C:\Program Files (x86)\AVAST Software\Business Agent\smbpol.db


  • /var/log/system.log

Component Logs

  • Avastsvc (core service log): C:\ProgramData\AVAST Software\Avast\log\AvastSvc.log
  • Antivirus UI log (issues with UI start, popups etc listed here): C:\ProgramData\AVAST Software\Avast\log\AvastUI.log
  • Antivirus UI javascript content: C:\ProgramData\AVAST Software\Avast\log\HtmlRemoteContent.log
  • Dumps from Crashed Components: C:\ProgramData\AVAST Software\Avast\log\unp*.mdmp
  • Self-Defense Module: C:\ProgramData\AVAST Software\Avast\log\selfdef.log
  • Anti-rootkit protection (driver start/stop): C:\ProgramData\AVAST Software\Avast\log\arpot.log
  • Anti-rootkit scan: C:\ProgramData\AVAST Software\Avast\log\aswAr*.log
  • CyberCapture/DeepScreen: C:\ProgramData\AVAST Software\Avast\log\autosandbox.log
  • Exchange Protection: C:\ProgramData\Avast Software\Avast\log\ExchangeShield.log
  • Firewall Configuration: C:\ProgramData\AVAST Software\Avast\log\FwServ.log
  • Mail Shield: C:\ProgramData\AVAST Software\Avast\log\Mail.log
  • Outlook addin: C:\ProgramData\AVAST Software\Avast\log\asOutExt64.log
  • Passwords: C:\ProgramData\AVAST Software\Avast\log\Pam.log
  • Patch Management: C:\ProgramData\Avast Software\PatchTools\History\*.zip
  • SecureDNS/Real Site: C:\ProgramData\AVAST Software\Avast\log\aswSecDns.log
  • SecureLine VPN: C:\ProgramData\AVAST Software\SecureLine\log\vpn_engine.log
  • Web Shield: C:\ProgramData\AVAST Software\Avast\log\StreamFilter.log
  • Web Shield Debug (debug logging must be enabled): C:\ProgramData\AVAST Software\Avast\log\FilterEngine.log
  • Network Inspector: C:\ProgramData\AVAST Software\Avast\log\Hns.log
  • Windows Security Center (registration of Avast to WSC): C:\ProgramData\AVAST Software\Avast\log\wsc.log

Other Articles In This Section:

Console Logs

Avast Error Codes

Related Articles:

Using Avast Support Tool

Creating Memory Dumps