The Hikvision error Offline (Xe0000105) is generated on the Platform Access tab if you try to view your IP camera system via the P2P method (Hik-Connect).
This error may show as well as Offline (0Xe0000104) or Offline (0Xe0000108) which are still the same type of error.
Technically, the error Offline (Xe0000105) is generated when the Hikvision IP camera, NVR or DVR fails to establish a correct communication protocol with the Hik-Connect server (via the P2P protocol). Since the connection doesn’t go through, the Status will be “OFFLINE”.
This error, shown on screen as Offline (0Xe0000104), Offline (0Xe0000108), Offline (0Xe0000105), can be fixed by using setting the correct DNS servers (Alternate & Preferred DNS). Follow the tips below. 
How to fix Hikvision Offline (0Xe0000105) error
You can adjust the settings directly via the recorder’s interface or by accessing the unit on the web browser. Make sure the recorder is connected to the internet. Check if the cables are fully plugged in.
Access the unit via a web browser (using the IP address), enter your username and password and once you’re in, navigate to Configuration > Network > Basic Settings and TCP/IP tab. You can have the IP address set on DHCP or manual, doesn’t really matter.
However, you need to check the DNS server section (as shown below). The error shows up if the fields are empty or if wrong information is entered. Set them as follow (these are Google’s DNS information and they get updated automatically):
- Preferred DNS Server: 8.8.8.8
- Alternate DNS Server 8.8.4.4.
If you’re adjusting the setting via the NVR’s interface, the screenshot is shown below. Once done, make sure to hit Apply.
Then you have to restart the NVR, DVR, or IP camera. Go to the Shut Down section and select reboot. Wait until it comes back on and try again to see if the error disappears from the Platform Access tab.
If everything is ok, you’ll see the Status go back to ONLINE. Try if you see the cameras via the Hik-Connect app. Normally you should be able to see the live view.
If for some reason the error doesn’t get fixed, reboot the router you may need to update the firmware on the recorder as well. Contact the seller or Hikvision, provide the unit’s model number and get the correct firmware.
