JSI Tip 0456 - Disabling Automatically detect slow connections.

The System Policy Editor does not allow you to disable the "Automatically detect slow connections" policy because of an error in the Winnt.adm file.

You can edit the %SystemRoot%infWinnt.adm file and locate:

POLICY !!SlowLinkDetectEnabled
VALUENAME "SlowLinkDetectEnabled"
END POLICY

Modify it as follows:

POLICY !!SlowLinkDetectEnabled
VALUENAME "SlowLinkDetectEnabled"
VALUEON NUMERIC 1 VALUEOFF NUMERIC 0
END POLICY

Configure and reapply the policy.

You can also edit the registry at:

Hkey_Local_MachineSoftwareMicrosoftWindows NTCurrentVersionWinlogonSlowLinkDetectEnabled

and set this REG_DWORD to 0 (a value of 1 is enabled).