Policy
Specify the maximum log file size (KB)
Windows 11 25H2
Policy overview
Key metadata and intent for this policy.
Supported OS tags: Windows10, Windows10RT, Windows11, Windows7, Windows8, Windows81, WindowsRT, WindowsRT81, WindowsServer2008, WindowsServer2012, WindowsServer2012R2, WindowsServer2016, WindowsVista
This policy setting specifies the maximum size of the log file in kilobytes. If you enable this policy setting, you can configure the maximum log file size to be between 1 megabyte (1024 kilobytes) and 2 terabytes (2147483647 kilobytes), in kilobyte increments. If you disable or do not configure this policy setting, the maximum size of the log file will be set to the locally configured value. This value can be changed by the local administrator using the Log Properties dialog, and it defaults to 1 megabyte.
Registry values
How enabled and disabled states update the registry.
No explicit registry values are set for enabled or disabled states.
Policy elements
Inputs and configuration options exposed by this policy.
| Element | Type | Registry mapping | Constraints & behavior |
|---|---|---|---|
Maximum Log Size (KB) ID Channel_LogMaxSize | decimal | HKLM\Software\Policies\Microsoft\Windows\EventLog\Application\MaxSize Type REG_DWORD | Range: 1024 to 2147483647 |
Other policies in this category
Explore related policies at the same level.
- ComputerBack up log automatically when fullAt least Windows Vista
- ComputerConfigure log accessAt least Windows Vista
- ComputerConfigure log access (legacy)At least Windows Vista
- ComputerControl Event Log behavior when the log file reaches its maximum sizeAt least Windows Vista
- ComputerControl the location of the log fileAt least Windows Vista