.CHG File Extension

Change log file created by the Windows service Net Logon (or Netlogon); tracks changes to the login security databases and is not meant to be opened or edited directly.

The file Netlogon.chg in the C:\Windows\ directory has been known to cause problems when creating Symantec Intelligent Disaster Recovery (IDR) bootable images. Consult the Symantec knowledge base to resolve the issue.

Older file type used to store Quicken financial information.