Lg Screen Mirroring Not Working

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After working flawlessly for 7 months, screen share with my windows 10 laptop stopped working 2 weeks ago with no explanation whatsoever. The error message I get on my lg 65w7 is 'your desktop has successfully connected to your tv but there is an issue sharing its screen'. I checked the laptop first but every diagnosis returns positive data concerning the Miracast functions (drivers, etc, etc). My laptop connects indeed with the tv but it is only black screen and immediately disconnected. I asked directly the support team from LG but apart of restarting and resetting everything to factory settings and updating of course to latest firmware they did not suggest anything and did not offer any troubleshooting methods. Has anyone experienced such behavior ? Is there any solution ? Thank you.

If you just want to display your PC's screen's contents on your LG TV, Miracast will allow you to stream your screen's contents directly to your LG TV without having to use any cables. As with the SmartShare option, Miracast works best when both your LG TV and your PC are connected to your router via Ethernet rather than Wi-Fi.

  1. Why is screen mirroring from iphone to lg tv not working. Preview of fitness session works, countdown of session works. Screen goes black with audio only once session begins.
  2. Many televisions come with a remote that has a dedicated screen mirroring button, and you need to press it to activate screen mirroring as well. You may also need to reset the network by turning your TV, router, and your smartphone off and on. As screen mirroring relies on Wi-Fi, sometimes restarting it can resolve connectivity issues.

Answers

  • @freddyoprea, Good day,
    Just checking all bases, both devices are on the same internet network? Try turning off the router, on the TV and the laptop turn off connecting to Wi-Fi, turn the router back on, and reconnect to the network.
    Try doing a firmware update on the TV:
    https://www.lg.com/us/support/product-help/CT10000018-1430510575535-firmware-or-software-update
    Here is our troubleshooting article for screen share:
    https://www.lg.com/us/support/product-help/CT10000018-20150637965681-external-device-connections

  • This may help you and others.

    My iPhone 7+, current OS, connected perfectly to my LG 60' until one day it didn't. The error message on the iPhone was something to the effect of 'Can't connect to LG OS' or something like that.

    Went through all the usual steps, verified the TV was updated, phone was updated, restarted WiFi, swore a little, blah, blah, blah. Nothing worked and figured there was no reason to ask Apple or LG for ideas since one would likely blame the other and I'd have to live with it either way. That's just how things are in this connected world.

    Then a light bulb went off. I knew there was no going backward with the iPhone OS but I could sure reset the LG to factory settings. I did and that fixed it. Whatever update LG did at whatever point didn't play nice with the Apple OS. I then set the LG to not do updates. I'll take my chances on missing a 'really important' one.

    An added 'bonus' when it was failing, the phone would still 'see' the TV in the phone's Mirroring selector box and then when I'd tap on it, if the TV was off, it would turn it on. Didn't realize that until one morning when my wife asked why I left the TV on all night. I'd been fiddling with the phone/mirroring while not in the TV room, went to bed and didn't know I'd turned it on. At least the cats enjoyed the all-night entertainment.

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