T6 Pro Cannot Connect To This Network After Windows 10 [Solved] Update

[theascen]

This is a Hotspot connection
Worked before most recent Windows 10 update 12/24
Wifi is on Airplane mode off
Reinstalled clean numerous times with no change
A newer driver from 08/24 keeps installing over previous network adapter
Ive rolled back, unintalled all of the driver and does not solve my issues
Ive went into regedit
Im like to try to format the drive write with all zeros
Is their a iso copy of the original Windows Pro that I can download for this device.
This unit is great Id like to try to get it back to the same state before the update.

[barry777]

You can click the link to jump to the T6Pro system download.

[theascen]

Thank you for this information. Unless I, missing a post somewhere. It would be nice to find locate the "OEM.inf" Realtek 8821CU NIC drivers, however in the mean time, I'll fresh reinstall. Then locate the OEM.inf from a fresh install and save it elsewhere. Then after updating then reinstall the OEM.inf. It's the updates that are causing the conflict. I'll reply back after success. Hopefully this will help someone later.

[theascen]

Thank you Whats the difference right off with https://drive.usercontent.google.com/do ... uthuser=0 VS https://drive.usercontent.google.com/do ... authuser=0 seems one is 600 mb larger. Is ther one thats not bloated? Lol Im asking too much. Anyway, I could upload an image or zip file when I work around the latest wifi issue.

[Gabe]

Thank you Whats the difference right off with https://drive.usercontent.google.com/do ... uthuser=0 VS https://drive.usercontent.google.com/do ... authuser=0 seems one is 600 mb larger. Is ther one thats not bloated? Lol Im asking too much. Anyway, I could upload an image or zip file when I work around the latest wifi issue.

The first one is Windows 11 Pro 22H2. The second one is Windows 10 Pro 2004.

[theascen]

Has anyone installed Windows 11 with any success?

[Gabe]

Has anyone installed Windows 11 with any success?

It all depends on the actual unit. Some T6 Pros with the J4125 do support Windows 11, while others don't. It depends on when it was manufactured, but I don't know when they changed them so that the newer ones do. It has to do with the physical components rather than just a BIOS update. I looked into this a couple of years ago, seeing if there was a BIOS update for mine that would enable Secure Boot, but because of the design it wasn't possible.

It won't hurt anything to try the Windows 11 system. If it doesn't support Windows 11 either the installation attempt simply won't work, or it'll initially work, but then likely give errors during the initial Windows setup steps.

With all of this said, if you like Windows 10 I'd stick with it. These units are already pretty basic and not very powerful, and with Windows 11 being more resource hungry it would probably not be quite as responsive compared to Windows 10. That's just personal advice, but you're certainly free to try the Windows 11.

[theascen]

I figured as much. I found out through system info I do not have secure boot as well. Wha wah...
In any case, I am happy with Win10Pro for the time being.
It is a Megatrend motherboard and like you described its possible for a BIOs update somewhere out there, if not a work around. Ill stick with 10 if I can work around the issue. Have you not had any problems with network after win10 update?

[Gabe]

I figured as much. Ill stick with 10 if I can work around the issue. Have you not had any problems with network after win10 update?

Nothing that I've noticed. I was using it a couple of days ago to print something, as my printer is too old for Windows 11, and I went online for about an hour afterwards using it.

[theascen]

I'm proud to say I was successful after weeks of troubleshooting.
Here is one solution that worked for me, and the files as promised if anyone else has the same issue.

Instructions are as follows:

• Thumb drive

Download

T6 Pro Win10Pro Network Adapter Driver INF.zip

Unzip and locate through device manager

(23.91 KiB) Downloaded 11 times

• Rollback the drivers on the Network Adapter in device manager

• Manually install the two .inf files after unzipping from the thumb drive.

• Then put in sleep, hibernate, restart, or reboot.

I also used https://www.revouninstaller.com which is a totally free and awesome app to rid of bloat apps easily and all their nasty registry leftovers that slow your system down. (Not a sponsor)

This PC stick is snappy and happy to carry right along with most of the hardest of task outside of video editing, and obvious others.

If any one wants an unbloaded .iso or image just let me know.
I'll help where I can. Thanks for everyone's input and insight.

Here is handy info if any one so desires to dig deeper.

OS Name Microsoft Windows 10 Pro
Version 10.0.19045 Build 19045

System Manufacturer ALASKA
System Model A_M_I_
System Type x64-based PC

Processor Intel(R) Celeron(R) J4125 CPU @ 2.00GHz, 2001 Mhz, 4 Core(s), 4 Logical Processor(s)
BIOS Version/Date American Megatrends Inc. 5.13, 9/3/2021

SMBIOS Version 3.2
Embedded Controller Version 255.255
BIOS Mode UEFI

Platform Role Mobile
Secure Boot State Unsupported
PCR7 Configuration Binding Not Possible
Windows Directory C:\WINDOWS
System Directory C:\WINDOWS\system32
Boot Device \Device\HarddiskVolume1
Locale United States
Hardware Abstraction Layer Version = "10.0.19041.5072"

Installed Physical Memory (RAM) 6.00 GB
Total Physical Memory 5.84 GB
Available Physical Memory 3.45 GB
Total Virtual Memory 7.46 GB
Available Virtual Memory 5.28 GB

Realtek 8821CU Wireless LAN 802.11ac USB NIC
C:\WINDOWS\SYSTEM32\DRIVERS\RTWLANU.SYS (1030.38.712.2019, 9.44 MB (9,893,888 bytes), 12/7/2019 1:07 AM)

Name [00000002] Realtek 8821CU Wireless LAN 802.11ac USB NIC
Adapter Type Ethernet 802.3
Product Type Realtek 8821CU Wireless LAN 802.11ac USB NIC
Installed Yes
PNP Device ID USB\VID_0BDA&PID_C820&MI_02\6&1D92DF5B&0&0002
Last Reset 1/14/2025 7:35 PM
Index 2
Service Name RtlWlanu
IP Address Not Available
IP Subnet Not Available
Default IP Gateway Not Available
DHCP Enabled Yes
DHCP Server Not Available
DHCP Lease Expires Not Available
DHCP Lease Obtained Not Available
MAC Address ‪E0:51:D8:08:9E:F5‬

Realtek Driver C:\WINDOWS\SYSTEM32\DRIVERS\RTWLANU.SYS (1030.38.712.2019, 9.44 MB (9,893,888 bytes), 12/7/2019 1:07 AM)
Windows Driver C:\WINDOWS\SYSTEM32\DRIVERS\VWIFIBUS.SYS (10.0.19041.1 WinBuild 160101.0800

Hardware Ids
USB\VID_0BDA&PID_C820&REV_0200&MI_02
USB\VID_0BDA&PID_C820&MI_02

Class Guid
{4d36e972-e325-11ce-bfc1-08002be10318}

Inf Name
netrtwlanu.inf

Driver Date
7/29/2019

Inf Section
RTL821CU.ndi.NT

Included Infs
netvwifibus.inf

Matching device ID
USB\VID_0BDA&PID_C820&MI_02

Advanced Settings
AdaptivePara 0
Enableadaptive Auto
Hi 7
L2 Auto
Qos Support
VHT Enable
Wake Magic Enable
Wake Pattern Enable
Wake Ping Enable
Wireless Mode Auto