@Clive_A Camera models are: DCS-4712E x2 DCS-4612EK x2 I've got 25 devices added into the NVR, and I don't think it was because of the stream channels being used, since they were working literally...

@Clive_A Thank you for your answer, I have tried rebooting all the IPCs that stopped working after the firmware upgrade, but no use. The cameras can be added to the NVR, but it just says "No Network...

Greetings, In my company we bought a VIGI NVR4032H, which was working fine-ish and adding all cameras for security recordings. Yesterday I happened to upgrade from Firmware 1.0.1 to 1.0.5, which...