Data type


Default value


0x0–0xFFFFFFFF ( bytes )

0x1312D00 ( 20,000,000 bytes )


Specifies the maximum size of the Net Logon debugging file, Netlogon.log. When the file reaches this size, any existing Netlogon.bak file is deleted, the current Netlogon.log file is renamed to Netlogon.bak, and a new Netlogon.log file is created. Logging is not interrupted.

The Netlogon.log file is created when the value of the DBFlag entry is greater than 0.

Note Image Note

Windows 2000 does not add this entry to the registry. You can add it by editing the registry or by using a program that edits the registry.