Dahua nvr and cameras not working

[Francisco73]

Dahua nvr clock started running wrong, stopped accepting password and possibly with other problem. After password recovery the nvr claims that all dahua starlights have wrong password or username. I reset the caneras but still not working. What are the user name and password of dahua starlihts after famera reset? Thanks.

 

[arkotech]

Iis the NVR POE?

Sent from my Pixel 3a XL using Tapatalk

 

[TonyR]

If it is POE, perhaps this will help ==>> ***PSA for those with a New DAHUA NVR with Built-in PoE switch

 

[Francisco73]

Iis the NVR POE?

Sent from my Pixel 3a XL using Tapatalk

Yes.

NVR4108HS-8P-4KS2

Iis the NVR POE?

Sent from my Pixel 3a XL using Tapatalk

Yes

 

[Francisco73]

If it is POE, perhaps this will help ==>> ***PSA for those with a New DAHUA NVR with Built-in PoE switch

nvr 4108

 

[Francisco73]

If it is POE, perhaps this will help ==>> ***PSA for those with a New DAHUA NVR with Built-in PoE switch

Thanks and sorry for the delay. I have NVR4108HS-8P-4KS2 and four IPC-HFW5231E-Z12 cameras from Andy. The NVR is about one year old and the cameras about two years old. I read what you posted but the problem with wrong username or password continues. The NVR detects the cameras, port 37777, IP addresses look ok but none of the passwords that I can think about works. The old one, the new NVR password (several factory resets9 or admin. Should not resetting the cameras reset the username and password to admin and admin or the one for the NVR? Until now it was plug and play. BTW any idea why the clock, password etc suddenly went wrong? Battery problem?