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Windows 10 & 8.1 Miracast Issue: Samsung Smart TV Not Detected, Stopped Working - Solutions?

lukpio3 12609 15
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  • #1 16783428
    lukpio3
    Level 21  
    Posts: 1431
    Help: 4
    Rate: 166
    Welcome,
    I do not know if I put a topic in a good section, so if I did it wrong, I apologize and I am asking you to move or indicate the right department for this problem.

    I wonder if the problem only occurs with me or maybe someone of you also observed something similar, namely I have 2 TV samsung with smart TV. Until now, without any problem, I connected 2 computers with one window, 8.1 with Windows 10 as wireless screens, and thanks to that I could share the desktop on TV. Of course, everything via WiFi. It worked quite well. Ok, 2 weeks I did not use this function, today Friday, I want to cast a movie on TV and here the end, the computer can not see TV. I have removed devices, I want to add them again, windows 10 does not detect TV at all, windows 8 detected TV as a non-certified device. I have no idea what happened. TV updated. I restored the factory settings. Zero effect. Nothing helps. I do not know what else to do anymore. Is microsoft kicked something up in some update, so this function stopped working? Can anyone possibly verify the operation of this option at home? Thank you in advance for your help.
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  • #2 16783907
    bogiebog
    Level 43  
    Posts: 24793
    Help: 2569
    Rate: 1528
    Nothing has changed on the web?

    Is the IP of the TV in the same network as the IP of the computer?

    Can you ping the TV from your computer?
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  • #3 16784420
    lukpio3
    Level 21  
    Posts: 1431
    Help: 4
    Rate: 166
    bogiebog wrote:
    Nothing has changed on the web?

    Is the IP of the TV in the same network as the IP of the computer?

    Can you ping the TV from your computer?


    Yes, I checked it too. TVs are on the same network and the computer can ping them easily :) . I also tested it on another network and it is unchanged :(
  • #4 16784433
    bogiebog
    Level 43  
    Posts: 24793
    Help: 2569
    Rate: 1528
    Maybe the miracast device broke down?
  • #5 16784532
    lukpio3
    Level 21  
    Posts: 1431
    Help: 4
    Rate: 166
    But it's on 2 computers at the same time? It seems unlikely
  • #6 16784534
    bogiebog
    Level 43  
    Posts: 24793
    Help: 2569
    Rate: 1528
    Miracast is a device plugged into the TV to the HDMI port.
    Communicates with the computer via WIFI.

    THIS device (connected to the TV to the hdmi port) could be broken,

    Try to configure the miracast device again.

    Added after 8 [minutes]:

    As miracast fell on both computers (win10, win8) it is rather unlikely that it would be the fault of software in computers, I would rather point to a device problem.

    Added after 1 [minutes]:

    As miracast is built into the TV, try reconfiguring.
  • #7 16784825
    lukpio3
    Level 21  
    Posts: 1431
    Help: 4
    Rate: 166
    But I have 2 TV and on both is exactly the same problem. Only winows 8 can see them but I can not connect with them because they claim that they are uncertified devices for Windows and the end. And before that he normally connected with them and everything could be shared.
  • #8 16784878
    bogiebog
    Level 43  
    Posts: 24793
    Help: 2569
    Rate: 1528
    lukpio3 wrote:
    But I have 2 TV and on both is exactly the same problem.

    Well, they probably did not get both equipment at once

    Try to Disable the wine barrier 10.
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  • #9 16790039
    lukpio3
    Level 21  
    Posts: 1431
    Help: 4
    Rate: 166
    bogiebog wrote:
    lukpio3 wrote:
    But I have 2 TV and on both is exactly the same problem.

    Well, they probably did not get both equipment at once

    Try to Disable the wine barrier 10.


    Hey,
    You know what, it's all getting weird. I turned off the firewall and the situation is as follows (I tested on 2 different networks). TV and computer connection with WiFi network. I have IP from the same subnet. Gate: 192.168.1.1, computer: 192.168.1.101, TV: 192.168.1.104 (ip dynamic). I release PING to the network, pass, release PING on TV, pass elegantly. Ok, I'm going to search. I find TV, I am trying to connect, all the information "Connecting" on the computer and a circus is starting because merging continues all the time and of course it does not connect but something strange happens with the network, ie I lose internet access and I am unable to connect pause neither router nor TV. I can not even enter the router's configuration page. Absolutely nothing. Only when I do a computer reboot or disconnect from the network and connect again it all returns to normal until I try to connect to the TV again. Then the same thing happens. The situation takes place on 2 networks, one Netgear stationary router, the second portable huawei with mobile internet. I give you a word that I did not have such problems before. I could connect to TV without any problems. Anyway, I used it for a few months, watched movies, sometimes TV served me as a second monitor. There were never any problems, nothing broke, it was great. And suddenly something like that.

    I forgot to add, this is the message I receive when pinging TV and router in the course of TV together: "Request timed out"
  • #10 16790082
    bogiebog
    Level 43  
    Posts: 24793
    Help: 2569
    Rate: 1528
    Second WIFI router in the network?
    Someone moved the antennae to the router?

    connect neta, cmd.exe
    ping 8.8.8.8
    ping and p-TV
    ipconfig / all
    arp -a

    Wait until it is jammed and ping tv is not responding
    ping 8.8.8.8
    ping and p-TV
    ipconfig / all
    arp -a

    Scan the WIFI network inssider 2.x where there is a TV where you use a laptop

    show all results.
  • #11 16792423
    lukpio3
    Level 21  
    Posts: 1431
    Help: 4
    Rate: 166
    bogiebog wrote:
    Second WIFI router in the network?
    Someone moved the antennae to the router?

    connect neta, cmd.exe
    ping 8.8.8.8
    ping and p-TV
    ipconfig / all
    arp -a

    Wait until it is jammed and ping tv is not responding
    ping 8.8.8.8
    ping and p-TV
    ipconfig / all
    arp -a

    Scan the WIFI network inssider 2.x where there is a TV where you use a laptop

    show all results.


    Generally, I solved the problem by restoring the factory settings in the router but it does not mean that I did not want to know what was causing it. I did everything that you wrote about, maybe something that disturbs you. As for routers, they are not on the network. These are two independent routers operating separately.

    The results were fresh after connecting to both the computer and TV network (no attempt was made to connect the computer to the TV):
    Code: text
    Log in, to see the code


    Code: text
    Log in, to see the code


    Code: text
    Log in, to see the code


    Results during the connection of the computer to the TV (on the computer with W10, the option of searching for a wireless screen which was obviously not found):
    Code: text
    Log in, to see the code


    Code: text
    Log in, to see the code


    Code: text
    Log in, to see the code


    Code: text
    Log in, to see the code

    [/code]
  • #12 16792546
    bogiebog
    Level 43  
    Posts: 24793
    Help: 2569
    Rate: 1528
    lukpio3 wrote:
    As for routers, they are not on the network. These are two independent routers operating separately.

    Upload the diagram (routers, tv, your computer, other devices, internet connections)
  • #13 17106644
    gregorburyna
    Level 2  
    Posts: 2
    Help: 1
    Rate: 2
    Sorry, I'm reheating, but I'll leave it for posterity. This is not the fault of the router, only Windows 10 and Intel. I write that it works on win8 and on win10 it does not. After one of the updates, it did. You need to combine with the Intel controllers under the wifi card
    Intel has ceased to develop WIDI technology, hence Miracast.
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  • #14 17484480
    Jesionki
    Level 13  
    Posts: 98
    Rate: 59
    gregorburyna wrote:
    Sorry, I'm reheating, but I'll leave it for posterity. This is not the fault of the router, only Windows 10 and Intel. I write that it works on win8 and on win10 it does not. After one of the updates, it did. You need to combine with the Intel controllers under the wifi card
    Intel has ceased to develop WIDI technology, hence Miracast.


    What do you mean with this combination with drivers? Do you have a specific solution, where do you get some working drivers from? I have a problem with Lenovo, HP and Samsung ...
    Evident Windows 10 fault.
  • #15 17684887
    kotekturek
    Level 11  
    Posts: 8
    Rate: 9
    gregorburyna wrote:
    Sorry, I'm reheating, but I'll leave it for posterity. This is not the fault of the router, only Windows 10 and Intel. I write that it works on win8 and on win10 it does not. After one of the updates, it did. You need to combine with the Intel controllers under the wifi card
    Intel has ceased to develop WIDI technology, hence Miracast.


    you're misleading a bit. In fact, intel stopped supporting and developing from his WiDi. However, miracast is a completely different technology and how you can read on the official website of the Intel:
    [url=]https://www.intel.com/content/www/us/en/support/articles/000021693/emerging-technologies.html[/url]
    it is supported natively by Windows 10.
    You need to look for a problem with the e-network, it may also be the fault of one of the Windows 10 updates and maybe we will see some amendments soon. Answer a lot after time but now I am looking for a solution myself because this function ceased to work (laptop dell inspirion 5577 and samsung ue55mu6452) while samsung s7 and s9 + phones worked but for a moment had a problem finding a TV for this smart things worked without charge on both . At home, I will try to check the router settings, connect the TV directly to the laptop via the host or use one of the phones as a host for the laptop and tv and write about the effects soon.
  • #16 20422262
    janguzik1975
    Level 1  
    Posts: 1
    As for the miracast connecting forever and unsuccessfully and reporting errors, it helped me on the dell precision 5530 to enable sharing of all network resources and restart the laptop ...

    I checked everything, i.e. router settings, network card and I do not know what else ....
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Topic summary

✨ The discussion revolves around issues with Miracast connectivity between Windows 10/8.1 computers and Samsung Smart TVs. Users report that their computers can no longer detect the TVs, which previously worked seamlessly for screen sharing. Troubleshooting steps include checking network configurations, ensuring devices are on the same subnet, and disabling firewalls. Some users suspect that recent Windows updates or Intel driver issues may have caused the problem, as Miracast functionality is integrated into Windows 10. Solutions proposed include reconfiguring network settings, restoring factory settings on routers, and ensuring that all devices are properly connected. Despite various attempts, including testing on different networks, users continue to experience connectivity failures.
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FAQ

TL;DR: Windows 10/8.1 Miracast to Samsung TVs may loop on “Connecting…”. A user measured 25% packet loss and said, “I solved the problem by restoring the factory settings in the router.” Try router reset, reconfigure TV/Miracast, and driver checks. [Elektroda, lukpio3, post #16792423]

Why it matters: This FAQ helps Windows users fix wireless display casting that suddenly stopped working with Samsung Smart TVs.

Quick Facts

How do I fix it when my Samsung TV isn’t detected by Windows 10/8.1 Miracast?

Start simple: power‑cycle TV and PC, forget the TV in Windows, and re-add it. If discovery still fails, reset your router to factory defaults, reconnect devices, and test again. One user resolved detection and stability immediately after a router reset. [Elektroda, lukpio3, post #16792423]

Why does Miracast say “Connecting…” forever and then my internet dies?

This points to a network-layer fault. Users reported that during a connect attempt, pings time out and even the router’s admin page becomes unreachable until reconnect or reboot. That behavior indicates the router’s wireless stack or multicast handling crashing under Miracast traffic. [Elektroda, lukpio3, post #16790039]

Is this a router issue or a Windows/Intel driver problem?

Both show up. One fix was a router factory reset, but another user traced failures to Windows 10 updates and Intel Wi‑Fi drivers after it had worked on Windows 8.1. Driver rollbacks or updates can restore Miracast. [Elektroda, gregorburyna, post #17106644]

Do the TV and PC have to be on the same Wi‑Fi network/subnet?

Yes. The thread confirms both devices on the same subnet and reachable by ping, which is required for discovery. If this is true yet discovery fails, suspect driver or router behavior during session setup. [Elektroda, lukpio3, post #16784420]

What quick diagnostics should I run before changing settings?

Collect baseline data: run ping 8.8.8.8 and ping the TV, then ipconfig /all and arp -a. While it’s “Connecting…”, repeat the tests. Optionally scan Wi‑Fi with inSSIDer to confirm channel, RSSI, and overlap. Share these snapshots to isolate faults. [Elektroda, bogiebog, post #16790082]

Windows 8.1 sees my Samsung TV as an “uncertified device.” What does that mean?

Windows 8.1 may list the TV but refuse connection with an “uncertified” label. In the thread, this appeared after Miracast had worked previously, hinting at a compatibility or update regression rather than hardware failure. [Elektroda, lukpio3, post #16784825]

What single change fixed the endless “Connecting…” for some users?

Enabling sharing of all network resources in Windows and rebooting the laptop cleared the loop for a Dell Precision 5530. This suggests local sharing/firewall profiles can block Miracast negotiation. [Elektroda, janguzik1975, post #20422262]

How do I reconfigure a built‑in Miracast receiver on a Samsung TV?

Treat it like an external dongle: open the TV’s wireless display settings, remove paired devices, and run setup again. The advice in-thread was to reconfigure the built‑in Miracast component if casting suddenly fails. [Elektroda, bogiebog, post #16784534]

Could two TVs or two PCs fail at once, or is that unlikely?

A user saw failures on two TVs and two PCs. Another member said simultaneous PC faults were unlikely and suggested focusing on the Miracast receiver configuration or device side first. [Elektroda, bogiebog, post #16784534]

Should I disable Windows Firewall while testing Miracast?

Temporarily, yes—only to test. One user disabled the firewall, but the failure persisted and the router became unreachable during attempts. That points beyond the firewall to network stability. Re‑enable protection after testing. [Elektroda, lukpio3, post #16790039]

What is Miracast, and how is it different from Intel WiDi?

Miracast is a Wi‑Fi display standard built into Windows 10; Intel discontinued WiDi. A forum member noted Miracast is separate from WiDi and referenced Intel’s notice, then worked on Windows settings and router checks. [Elektroda, kotekturek, post #17684887]

What statistic signals a network-layer problem during casting?

In one capture, ping to 8.8.8.8 showed 25% packet loss while Miracast tried to connect. Packet loss plus LAN timeouts strongly indicates router instability under the session. [Elektroda, lukpio3, post #16792423]

Could a second Wi‑Fi router or antenna changes cause interference?

Yes. One helper asked about a second router and antenna adjustments, then recommended pings, ARP tables, and spectrum checks to rule out interference or double NAT effects during Miracast setup. [Elektroda, bogiebog, post #16790082]

How do I enable sharing to fix the endless Miracast connect loop? (3 steps)

  1. In Windows, enable sharing for all network resources on your active network profile.
  2. Reboot the laptop to apply policy and driver reload.
  3. Reattempt casting to the Samsung TV from Project > Connect to a wireless display. [Elektroda, janguzik1975, post #20422262]
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