Altium isn't showing unconnected nets errors

Thread Starter

Younes Thabet

Joined Jan 9, 2019
Hello all,

Today I received a PCB and after assembling it I discovered I forgot to route a voltage rail.
The thing is that I am sure Altium showed no un-connected nets errors back then when I designed it.
The net is highlighted below, see that both vias and pads are of the same net but not connected with a trace and this didn't show in the DRC report.

Screenshot 2023-07-18 154625.png

I reran the DRC, and it shows no errors and even the routing information in the "board information" option shows no errors. (see the attached images)
Screenshot 2023-07-18 155231.png

Routing information:
Screenshot 2023-07-18 155034.png

Why altium isn't showing this as an error in DRC? Is it because the pads and vias have the same net so Altium assumes they are connected?