I have a couple of C300HP's, and was recently altering the network they are connected to.

The devices are still operational but cannot be connected to by the direct web interface.

Connecting direct to the web interface at the "/" (root) directory gets an error message: "No such file or directory"

If you add any other path eg. "/f", you get the following error message:

{ "error_code": -40401, "data": { "code": -40407 } }

I've tried "factory" resetting them from the Vigi mobile app - but it doesn't make any difference.

The devices are still connecting OK to a TP-Link NVR1008H(UN.)

How can I restore them so the web interface works again?

Regards, Bill.