If you receive a 'Network Transmission Failure' error message when controlling a LILIN NVR via a web browser, check for the following software on the PC you are using to control the NVR.
In some circumstances having the Malwarebytes software installed on a PC can effect the web browser configuration and control of an NVR.
Simply disable this software and the PC will be able to communicate with the NVR as expected.
It may be possible to add exceptions to the Malwarebytes software. Please refer to the Malwarebytes software support documentation for further information.