Hi Andreas
For the question 1: normally, the camera IP should be 192.168.x.x ,and if may be set to 169.254.x.x ( the Mech-Eye SDK version which is higher than 2.0.0 ), if you have connected the camera with Router, you may need set the PC ethernet connection as DHCP mode, then use Mech-Eye Viewer to scan the devices, please make sure there will be no ip conflicts if you use dual Network Interface Card
For the question 2:
please refer to the docs:
Camera Not Found in Mech-Eye SDK
1.Check Windows Defender Firewall and Antivirus Software
Windows Defender Firewall and antivirus software may prevent the communication between Mech-Eye Viewer and the camera.
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Check antivirous software: If an antivirus software is running, please turn it off.
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Configure Windows Defender Firewall: You can turn off Windows Defender Firewall completely, or unblock Mech-Eye Viewer in Windows Defender Firewall.
2.Turn off Windows Defender Firewall:
Click the magnifying glass icon in the taskbar, and search for Windows Defender Firewall.
Click Windows Defender Firewall in the search results to open it, and click Turn Windows Defender Firewall on or off on the left.
Select Turn off Windows Defender Firewall for both settings, and then click OK at the bottom.
3.Unblock Mech-Eye Viewer in Windows Defender Firewall:
Click the magnifying glass icon in the taskbar, and search for Windows Defender Firewall.
Click Windows Defender Firewall in the search results to open it, and click Allow an app or feature through Windows Defender Firewall on the left.
Click Change settings at the top and then click Allow another app… at the bottom.
In the pop-up window, click Browse, navigate to the installation path of Mech-Eye Viewer, and select Mech-Eye Viewer.exe.
Click Add to unblock Mech-Eye Viewer.
After performing the above, open Mech-Eye SDK and see if the camera shows up.
Cheers, mate.
Barry