Data type Range Default value
REG_DWORD 0x1- 0xFFFFFFFF milliseconds 0x3E8 (1 second)


Determines how often TCP repeats keep-alive transmissions when no response is received. TCP sends keep-alive transmissions to verify that idle connections are still active. This prevents TCP from inadvertently disconnecting active lines.

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.

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