Hi All, I Purchased a hub v3 via ebay and am running into issues when trying to connect similar to others. Device is detected when SmartThings is open on my S23 Ultra (but have also tried adding it manually) Invited to scan QR Code (have also added the SN manually) Invited to select network (have…

Thought this as well, no luck with the NTP or site block though, not sure if there is anything else I can try or anyone at samsung can help with

You can submit your hub logs as posted in that thread. They can identify if it is an expired certificate or not.

For me only block ntp port don’t worked… Only sucefully when i blocked all ntp ports for my country… “On your router, look for parental controls and block all NTP servers in your country. So simple… Then you can add the hub to smartthings. Since I’m in Portugal, I blocked the following: server 0.…

The NTP fix sounds more likely for you but just in case here’s what worked for me. [image] New (used) V3 hub setup Devices & Integrations Got it! I did set up the network block, but I don’t think that was the issue; I was connecting via Ethernet, but the setup…

Purchased used Samsung hub v3 and it will not connect to internet

Devices & Integrations

jkp July 21, 2026, 2:07am 2

Most likely you are expecting the expired security certificate. Follow the guide in the following thread: Troubleshooting SmartThings Hub 2018 and Aeotec Hub

Topic		Replies	Views
Error code 33-504 Devices & Integrations	163	6686	July 7, 2026
Hub v3 impossible to connect Devices & Integrations hubv3	58	3499	June 1, 2026
Another Smart Hub Connection Issue - Error code 33-504 Devices & Integrations	72	3033	June 21, 2026
Troubleshooting SmartThings Hub 2018 and Aeotec Hub Announcements hub , hubv3	371	18227	August 1, 2026
SmartThings Hub v3 Couldn't add device A network or server error occurred. Try again later Devices & Integrations	5	3115	August 21, 2021

Purchased used Samsung hub v3 and it will not connect to internet

Related topics