Modifying an Existing TcpNumConnections Value

Modify the maximum number of connections that TCP can have open simultaneously.

  1. Log in to Windows using an account with Windows administrator privileges, or use the default “sa” login.
  2. From the Run prompt, start the regedt32 utility.
  3. Select the Registry window HKEY_LOCAL MACHINE.
  4. Open the Registry key HKEY_LOCAL_MACHINE\SYSTEM\ CurrentControlSet\Services\Tcpip\Parameters.
  5. If the TcpNumConnections value exists, double-click it.

    If the value does not exist, add and configure it.

  6. In the DWORD Editor dialog box, select the Decimal option.
  7. Enter the maximum number of connections to support.
  8. Click OK to return to the Registry key dialog box.
  9. Select Exit from the Registry menu to quit regedt32.
  10. Restart your computer.