topic Re: Second screen doesn't work on Galaxy Tab S8 Ultra 5G in Tablets

Second screen doesn't work on Galaxy Tab S8 Ultra 5G

Tom Placer — Thu, 02 Jun 2022 18:25:58 GMT

My Galaxy Tab S8 Ultra 5G, bought in March, upgraded to to last firmware Andorid OS build...everything.

I've tried the second screen function from two different PC's with windows 11 (both upgraded to the latest version of Windows, I mean all SP-s are installed (the last is Cumulative May 2022 upgrade for Windows 11)).

I've tried the functionality on 2 different WiFi Networks which are set on 2 different routers. Both, the Tablet and the PC's were on the same WiFi network.

Both the PC have installed Samsung Second Screen SW from Microsoft Store (but I've tried also native functionality (within Windows)).

The results are exactly and every time the same: The tables goes black screen for a second or two, and then the home screen reappears. Like If the connection is established but when the picture from the PC has to be displayed, the tablet closes the connection. And even on the PC I have to reinitiate the procedure of connection with CTRL-K (Win native) or with the Samsung APP.

Can somebody give me an advice to solve the problem or Samsung has to overcome this issue?

I've bought this tablet beside all to use it as a secondary screen when I go to work at the offices of my customers.

Any answer would be highly appreciated. If it comes from Samsung directly even more.

Thank You in advance for the answer(s).

Re: Second screen doesn't work on Galaxy Tab S8 Ultra 5G

AndrewL — Thu, 02 Jun 2022 19:39:00 GMT

@Tom Placer: I'm sorry to hear that you're having trouble using the Second Screen feature on your Tab S8 Ultra. I appreciate that you may have attempted these steps already, but please can you confirm if you have done the following:

Swipe from the top of the Tab S8 Ultra screen to the bottom, then again to enlarge the Quick Panel, and select Second Screen from the available options > Choose your preferred connection mode, then leave this page open, as it needs to open to complete the connection > On your PC, press the Windows key and K simultaneously > Select your tablet from the list of available devices.

If you're still unable to establish a connection, try uninstalling the Second Screen app from your PC. Let me know how you get on.

Re: Second screen doesn't work on Galaxy Tab S8 Ultra 5G

Members_4NTrD8k — Fri, 03 Jun 2022 08:33:54 GMT

Hello,
I Have the exact same problem described by @Tom Placer
Here is my windows config :

I tried uninstalling the Second Screen app as @AndrewL suggested, but still got the black screen on the tablet when trying to connect.

Thanks in advance.

Re: Second screen doesn't work on Galaxy Tab S8 Ultra 5G

Tom Placer — Fri, 03 Jun 2022 10:10:27 GMT

Thank You Andrew!

Yes, the procedure I use to connect is exactly the same You have mentioned in your response:

"Swipe from the top of the Tab S8 Ultra screen to the bottom, then again to enlarge the Quick Panel, and select Second Screen from the available options > Choose your preferred connection mode, then leave this page open, as it needs to open to complete the connection > On your PC, press the Windows key and K simultaneously > Select your tablet from the list of available devices. "

The reinstall of the Samsung APP on the PC doesn't work.

Uninstalling the Samsung's app on the PC an using the native functionality doesn't do the job. I can send You a video what is happening I you want.

Thank You in advance for the answer.

Sincerly, tom

Re: Second screen doesn't work on Galaxy Tab S8 Ultra 5G

Tom Placer — Fri, 03 Jun 2022 10:47:36 GMT

My Winver says:

It's a windows 11 Pro:

And the PC is :

The other notebook is an ASUS with the same Windows OS:

Re: Second screen doesn't work on Galaxy Tab S8 Ultra 5G

Members_4NTrD8k — Sat, 04 Jun 2022 22:36:02 GMT

Hello @Tom Placer ,

After some digging in my windows config, here is what worked for me.

1- Go to Device manager > Network adapters

Select wireless adapter

Update driver

2- From the next popup select Browse my computer for drivers

3- Select Let me pick from a list of available drivers

4- Select the driver from Microsoft

5- Click Next

6- After the install is complete restart your PC

Hope it Helps.

Peace.

Re: Second screen doesn't work on Galaxy Tab S8 Ultra 5G

DK65 — Mon, 20 Jun 2022 01:27:13 GMT

Hello @AndrewL

I have the exact same problem as described above by @Tom Placer and @Members_4NTrD8k. I have followed all the fix instructions provided and still no joy. I was wondering if anyone else fixed theirs and if so, how?

Any advice greatly appreciated - I have spent hours trying to get this second screen working.

Cheers

Don

Re: Second screen doesn't work on Galaxy Tab S8 Ultra 5G

Adarwich — Mon, 20 Jun 2022 23:55:10 GMT

Hi i'm haveing the same problem as everyone Else, i have tried everything, but it won't work.

Please help

Re: Second screen doesn't work on Galaxy Tab S8 Ultra 5G

ducs4rs — Mon, 27 Jun 2022 20:47:40 GMT

Somewhat unrelated, can second screen work over a wired connection? In my office I connect my S8 Ultra via a USB-C dongle that has a 1G ethernet adapter which works. But I can get Second Screen to work.

Re: Second screen doesn't work on Galaxy Tab S8 Ultra 5G

Duckland — Tue, 28 Jun 2022 08:40:20 GMT

Same issue , tried 2 laptops with windows 10 ( work & personal) ... tab goes black for a few seconds and then bombs back to the Home screen ... not happy

Re: Second screen doesn't work on Galaxy Tab S8 Ultra 5G

Tom Placer — Tue, 28 Jun 2022 13:46:45 GMT

Hi Members_4NTrD8K !!

Thank You for Your suggestion. I've tried it but still no go.

Hope someone else could give me the right advice to solve this problem.

Sincerly

Re: Second screen doesn't work on Galaxy Tab S8 Ultra 5G

Tom Placer — Tue, 28 Jun 2022 13:50:16 GMT

Hi Samsung developers!

Can someone from Your team give as some debugging tool to be able to help You address the right cause for the failure so that You can fix it ?

Thank You in advance for the answer.

Sincerly, tom

Re: Second screen doesn't work on Galaxy Tab S8 Ultra 5G

ducs4rs — Tue, 28 Jun 2022 14:07:37 GMT

I tested second display on a different system and I can say it works over a wired connection. I think my other setup fails due to already having multiple displays and Windows gets confused. I am good.

Re: Second screen doesn't work on Galaxy Tab S8 Ultra 5G

DK65 — Tue, 28 Jun 2022 22:08:30 GMT

Hi everyone

After hours of trying different things I turned off my enhanced firewall in my antivirus and it now works exactly how it is supposed to work. I have multiple displays as well and my Samsung Tab S8 is now the fourth screen.

Hope you all get yours working too.

Cheers

Re: Second screen doesn't work on Galaxy Tab S8 Ultra 5G

Tom Placer — Fri, 01 Jul 2022 14:31:55 GMT

Hi DK65 !!!

Thank You so much for Your post. It made my day !!! After disabling the ESET ENDPOINT SECURITY FIREWALL COMPLETELY for 10 mins, i've been able to use the Second Screen option for the very first time on my tablet.

I am not going to verify what port and / or protocol should be put into the firewall exceptions, since this answer should come from Samsung by itself.

They should , now that We found out the very reason for the problem, publish the conditions (ports, protocols, etc...) under which the Second Screen works openly and even put the "demistifying" text for this possible issue in the Second screen "Help screen" that appears when You swiith on the Second Screen option under settings and the tablet waits for the connection.

In that way they will help a lot of unhappy users worldwide. I hope this post will be red by some Samsung programmer, product manager and reach ists scope.

Sincerly,

Re: Second screen doesn't work on Galaxy Tab S8 Ultra 5G

Tom Placer — Tue, 12 Jul 2022 14:10:37 GMT

Did someone from Samsung read my solution and suggestion ?

Sincerly!

Re: Second screen doesn't work on Galaxy Tab S8 Ultra 5G

InfuseMe — Fri, 15 Jul 2022 02:30:17 GMT

Same issue here. Samsung Notebook and a New Galaxy Tab 8 Ultra. Same network, no joy. The PC sees the machine but it wont connect. Miracast is always troublesome.

Re: Second screen doesn't work on Galaxy Tab S8 Ultra 5G

willjoe — Mon, 18 Jul 2022 07:34:15 GMT

Regards,

Will

Re: Second screen doesn't work on Galaxy Tab S8 Ultra 5G

Spartaner — Sun, 14 Aug 2022 21:44:27 GMT

I have the same issue. Second screen doesnt work.

pls help

Re: Second screen doesn't work on Galaxy Tab S8 Ultra 5G

Adarwich — Sun, 14 Aug 2022 21:49:17 GMT

Mine is working now, i don't know how and i don't know why.

But it's not as smooth as is was before.