I plug my phone into a USB port.
The first time I did so, an AutoPlay window pops up prompting me to run LGAutoRun.exe. I click to do so.
The LG United Drivers are installed onto my computer great.
But then an AutoPlay window pops up prompting me to run LGAutoRun.exe. I click to do so.
My computer attempts to install MTP USB Driver, but fails. According to Windows, the device is unplugged.
The AutoPlay window reappears. Repeat from the beginning of the paragraph.
What have I done to deserve such trouble, LG?!?!
Apparently the drivers installed directly from phone are not enough. In any case, I was observing similar behaviour *until* I installed LG PC Suite (which you should have been prompted to do too). It's stupid, it sucks but again, it's LG.
Install the LG drivers first. After that, when you plug your phone, it will be recognised as an mtp device.
Have you got Windows Media Player installed?
hmskrecik said:
Apparently the drivers installed directly from phone are not enough. In any case, I was observing similar behaviour *until* I installed LG PC Suite (which you should have been prompted to do too). It's stupid, it sucks but again, it's LG.
Click to expand...
Click to collapse
I forgot to mention I installed LG PC Suite as well. Same problems.
Greenpeace22 said:
Install the LG drivers first. After that, when you plug your phone, it will be recognised as an mtp device.
Click to expand...
Click to collapse
I tried two different versions of the LG United Mobile Driver, versions 3.7.2 and 3.8.1 on my computer. Same problems.
artas182x said:
Have you got Windows Media Player installed?
Click to expand...
Click to collapse
I do. Same problems.
Plug the phone, go to device manager in windows and uninstall the driver for the phone( or whatever shows up with the yellow triangle). Then unplug the phone and connect it back again. It should work. If not, uninstall the lg drivers and clean every trace of them and start from the begining.
Greenpeace22 said:
Plug the phone, go to device manager in windows and uninstall the driver for the phone( or whatever shows up with the yellow triangle). Then unplug the phone and connect it back again. It should work. If not, uninstall the lg drivers and clean every trace of them and start from the begining.
Click to expand...
Click to collapse
Tried uninstalling the LG U2 USB Driver, then disconnected and reconnected phone. Same problem. LG U2 USB Driver was installed but MTP USB still shows up as unplugged.
Then uninstalled LG PC Suite and LG United Mobile Driver, reinstalled LG PC Suite and reconnected phone. Problem still occurs. I run LGAutoRun.exe and United Mobile Drivers are installed. Same problem. MTP USB shows up as "device unplugged" and phone keeps disconnecting and reconnecting to computer, saying drivers were not properly installed due to MTP USB being unplugged.
Interesting to note the phone is listed as a CD-ROM drive.
optimusl9 said:
Tried uninstalling the LG U2 USB Driver, then disconnected and reconnected phone. Same problem. LG U2 USB Driver was installed but MTP USB still shows up as unplugged.
Then uninstalled LG PC Suite and LG United Mobile Driver, reinstalled LG PC Suite and reconnected phone. Problem still occurs. I run LGAutoRun.exe and United Mobile Drivers are installed. Same problem. MTP USB shows up as "device unplugged" and phone keeps disconnecting and reconnecting to computer, saying drivers were not properly installed due to MTP USB being unplugged.
Interesting to note the phone is listed as a CD-ROM drive.
Click to expand...
Click to collapse
Install the software from the CD image. It will load the correct driver. After this re-connect the device and the CD image will show up for a few seconds and disappear. After this the storage will show up. That is how it worked on my device.
kevev said:
Install the software from the CD image. It will load the correct driver. After this re-connect the device and the CD image will show up for a few seconds and disappear. After this the storage will show up. That is how it worked on my device.
Click to expand...
Click to collapse
I have already tried what you said as I posted before. The LG United Mobile driver gets installed but the MTP USB Driver does not get installed due to the device being unplugged according to Windows, even though I have yet to disconnect the phone from the computer. The phone still says "Connected as an installer".
The phone is recognized as an F: Drive by Windows but LGE Mobile but keeps disconnecting and reconnecting every 20 seconds or so.
I am going to have to upload a video to YouTube to make things crystal clear.
optimusl9 said:
I have already tried what you said as I posted before. The LG United Mobile driver gets installed but the MTP USB Driver does not get installed due to the device being unplugged according to Windows, even though I have yet to disconnect the phone from the computer. The phone still says "Connected as an installer".
The phone is recognized as an F: Drive by Windows but LGE Mobile but keeps disconnecting and reconnecting every 20 seconds or so.
I am going to have to upload a video to YouTube to make things crystal clear.
Click to expand...
Click to collapse
Try a different USB port or cable. My P769 would not work on my USB 3 ports, but was happy on the USB 2 port. I had already installed the drivers and LG PC Suite and it picked up each mode just fine.
Plugging the phone into USB 2.0 makes the phone show up in portable devices, but LG Suite fails to identify the phone. I tried using both LGE Android Net MTP USB Device and MTP USB Device but they both fail. I have LG United Drivers and LG Suite installed already.
got thesame problem here mate..i search all over here and google the driver but still cant find any solution..this is so frustrating to fix this issue,,got install and uninstall the pc suite and driver many times but still cant get the solution..so what could be the fix????
no one can suggest..someone told me that maybe its causing the broken data cable but i have 3 cables now..
everytime i intend to install the MTP driver thing my pc always failed to do so,,saying that the filename,directory name or syntax label is incorrect..but i manually direct the search to lg driver folder but same error occurs..or there still other alternative apps that can transfer files without removing my sd to my phone,or atleast transfer files over the wifi..??
Any fix for this one? Already tried uninstalling, installing LG drivers, removed and reinserted SD card and everything. But still to no avail. It installs everything successfully EXCEPT USB MTP device which is the one I needed the most. Any solutions? Thanks!
Futurust said:
Any fix for this one? Already tried uninstalling, installing LG drivers, removed and reinserted SD card and everything. But still to no avail. It installs everything successfully EXCEPT USB MTP device which is the one I needed the most. Any solutions? Thanks!
Click to expand...
Click to collapse
You must be on 64 bit windows. Not even on 64bit, Still try this...
1) Uninstall LG Drivers, LG PC Suite and anything you see named LG. Restart PC.
2) Install latest LG Driver from this post (step 4)
3) Install Optional MTP Driver from this post (step 4)
4) Open Windows Device Manager (just to watch whats happening.)
5) Disconnect Internet (To avoid stupid online WDM drivers)
6) Connect phone with Usb and let drivers install automatically. Give it some time to install drivers keeping watch on Device Manager window.
7) Keep changing USB connect modes to all modes one-by-one on Phone and let drivers install.
You should see MTP drivers installed now. If this does not help, cant think of anything else. If this works, press THANKS button
EDIT: Connect USB at backside of pc, directly to USB on pc motherboard.
cmahendra said:
You must be on 64 bit windows. Not even on 64bit, Still try this...
1) Uninstall LG Drivers, LG PC Suite and anything you see named LG. Restart PC.
2) Install latest LG Driver from this post (step 4)
3) Install Optional MTP Driver from this post (step 4)
4) Open Windows Device Manager (just to watch whats happening.)
5) Disconnect Internet (To avoid stupid online WDM drivers)
6) Connect phone with Usb and let drivers install automatically. Give it some time to install drivers keeping watch on Device Manager window.
7) Keep changing USB connect modes to all modes one-by-one on Phone and let drivers install.
You should see MTP drivers installed now. If this does not help, cant think of anything else. If this works, press THANKS button
EDIT: Connect USB at backside of pc, directly to USB on pc motherboard.
Click to expand...
Click to collapse
Thanks for taking the time to answer me mate. Already tried literally everything on what you just said above. Still no. I tried it on my brother's old vista laptop. One connect and it worked instantly! Lol.
Sent from my LG-P768 using Tapatalk 2
optimusl9 said:
I plug my phone into a USB port.
The first time I did so, an AutoPlay window pops up prompting me to run LGAutoRun.exe. I click to do so.
The LG United Drivers are installed onto my computer great.
But then an AutoPlay window pops up prompting me to run LGAutoRun.exe. I click to do so.
My computer attempts to install MTP USB Driver, but fails. According to Windows, the device is unplugged.
The AutoPlay window reappears. Repeat from the beginning of the paragraph.
What have I done to deserve such trouble, LG?!?!
Click to expand...
Click to collapse
This may help - credit goes to levicki where I found this article. I was having problems with my Garmin Satnav
I can't post urls as I am a newbie member, so google this phrase mtp usb device failed device unplugged
and look for this result - near the end of page 1 on my search
HOWTO: Fix MTP USB driver problem in Windows 7 - Tips - Levicki's ...
If you are running on windows xp you need to install windows media player 10 or later
Sent from my LG-P768 using xda app-developers app
tried this method, still no go, tried almost everything on the web, mtp drivers fail to install
running win7 x64
solved mt htc one mtp problem
fazq01 said:
This may help - credit goes to levicki where I found this article. I was having problems with my Garmin Satnav
I can't post urls as I am a newbie member, so google this phrase mtp usb device failed device unplugged
and look for this result - near the end of page 1 on my search
HOWTO: Fix MTP USB driver problem in Windows 7 - Tips - Levicki's ...
Click to expand...
Click to collapse
This one helped me to solve my problem ,, just deleted this file and tried it worked. C:\WINDOWS\INF\wpdmtp.inf
THANKS
optimusl9 said:
I plug my phone into a USB port.
The first time I did so, an AutoPlay window pops up prompting me to run LGAutoRun.exe. I click to do so.
The LG United Drivers are installed onto my computer great.
But then an AutoPlay window pops up prompting me to run LGAutoRun.exe. I click to do so.
My computer attempts to install MTP USB Driver, but fails. According to Windows, the device is unplugged.
The AutoPlay window reappears. Repeat from the beginning of the paragraph.
What have I done to deserve such trouble, LG?!?!
Click to expand...
Click to collapse
This works on XP x86
Need:
1. LG USB cable that came with the phone,
2. Media Player 10/11 preinstalled,
3. your LG Driver,
3. LG Phone,
4. and Media Transfer Protocol Porting Kit (mtppk12.exe)
1. with phone disconnected install Media Transfer Protocol Porting Kit
2. when asked to restart the PC, go ahead and restart
3. open device manager, connect phone to PC
4. install driver and watch LGE Android MTP disappear
5. be sure to toggle between Charge and MTP on the phone to install all drivers
this also works for HTC MTP
Related
Hi everyone,
i'm having difficulties to connect my sgs2 to a pc.
i have tried it on 3 different machines (win7 64, win7 64, winxp 32) with the same problem:
I works fine when i first connect the phone in download mode. But as soon as i disconnect the cable i can't connect it again. Windows sais that it doesn't recognize the device and that's it. The device manager shows an "Unknown Device" under USB-Controller. And i am not even able to install drivers by manually pointing windows to a file.
as already sais, i have tried that on 3 different machines. I have tried installing driver via kies and via the driver file that is available here in the forums. i have also tried different usb ports.
Any ideas?
Goddchen
EDIT: Maybe this is an important information: the phone connects fine as long as it is running (can be found via adb, logcat is working, etc...) it only makes problem when in download mode...
I had exactly the same issue yesterday on my Windows 7 box. In the end I connected the phone in normal (not download) mode. Into device manager and uninstalled the drivers through there.
Then I uninstalled Kies and reconnected the phone, I allowed Windows to search windows update to find drivers (not that it did as it couldn't find any and reverted to the local ones. Then disconnect the phone, re-install Kies, run the install drivers from the tools menu, close Kies. Run up Odin and the connect the phone in Download mode, low and behold 2 minutes later after a lengthy installation process the phone was picked up.
I tried a number of things but for some reason this specific order seemed to sort it.
Hey,
thanks for you hints. But they didn't work for me.
I found the problem: believe it or not, it was THE CABLE. I went and got another cable and this one is working fine all the time. The other one doesn't... Very strange...
I'm having an issue where my thunderbolt does not recognize my device any longer. I used to have it set up with pdanet and everything worked well for about a week. All of a sudden, any computer i tried to plug the device into, wouldn't detect the phone. A friend of mine has tried his thunderbolt on my computer and it detects it.
When plugging my phone in, it pops up an error message with "USB Device not Recognized." In the device manager, the phone shows up as Unknown Device. I have tried this on 3 different pc's, using 3 different data cables. No USB symbol displays on the taskbar of the phone when I plug it in, however, it does charge.
What I have tried:
Changing data cables.
Using another PC.
Uninstalling device drivers and letting windows re-detect and install.
Downloaded HTC Sync and ran it after uninstalling drivers again and re-plugging the phone.
Changed different Connection settings on the phone, such as USB Debuggin on/off, and changing it to HTC Sync Mode, Charge Only, Disk Drive, etc
Mounted and unmounted SD Card in the phone settings.
OS: Windows 7 x64
Thank you for any help you may provide.
same problem
I have the same problem with HTC mytouch 3g 32B Android 2.2.1 when I plug it through usb under Vista.
Any suggestions?
Try installing the usb drivers from htc if you haven't.
http://dl4.htc.com/RomCode/Source_and_Binaries/USB_driver_20101122_release.zip
I have download the HTC usb drivers but when i go to control panel and uninstall the unknown device it just reinstalls it. when i try to update drivers using the location
ie C:\Users\sxristi\Downloads\android-usb-driver\Android USB Driver\i386
i get a reply
The best software for you device is already installed. Windows has determined that the driver software for your device is up to date.
and it continues to point to
unknown device
Oh one more things i got the usb drivers from Android SDK Manager the google usb drivers revision 4 and the weird thing is that i do not get the trident usb nor the debug icon on my HTC when i plug it in to my vista. I did get it once or twice before but not in general since the usb devices are not recognized. However when i boot on my Ubuntu os then i do get them recognized. so i guess the problem is with windows drivers somehow...
Thanks for the replies.
I've tried to install the drivers from HTC but Windows says that the driver is not compatible with my the device.
Also, I tried on a system with Windows XP and everything worked as intended, but I cannot get it to work properly in Win 7 x64 anymore.
When my win7 comp no longer sees my Tbolt I have to toggle the USB Debugging off then back on. Usually within a few seconds it reads it again. If that does not work I have also used the option to turn on internet pass through then change it back to hard drive mode. Either of those usually work for me. My drivers I used were from android sdk if that makes any difference. Hope this helps.
Sent from my ADR6400L using Tapatalk
These didn't work, but thanks for the input
HTC
My problem continues under Vista OS. I called HTC and they told me to re install their Sync after removing Adobe Air and all HTC drivers and Google USB drivers. I did that and reinstalled Sync and still nothing. They also told me to call microsoft for it seems operating system conflict.
My conclusion yields toward windows conflict. But I can not figure out this conflict. Perhaps something I have installed does not let my vista recognize the HTC android device and uses the windows usb drivers to create this "Unknown Device" under usb serial bus controllers. once it is an unknown device forget about Sync or ADB etc... The phone is just not recognized as android and you can not do much with it via windows.
For the person who suggested to turn "USB Debugging" on-off, i did that and still the computer recognizes that there is a usb device but again it says "usb device not recognized unknown device.."
any additional suggestions???
I've verified that my phone works fine on Windows XP. I still cannot connect to windows 7, though.
Try turning OFF Fast Boot and turning ON USB debugging. this helped for me.
same problem
I have a similar problem too .. i know its not the computer as other phones and pen drives are working ok.
Plus this phone has same problem on other computers too, where as other phones work fine.
So it has to do something with the phone and not the drivers or computer in anyway
I have the same problem, no PC recognizes my HTC Thunderbolt. Now change cable and tried with windows xp, 7 and 8. Is there any solution I can not root. I want to change the rom factory rom I do not like but I can not do anything because I do not recognize the usb. Also the menu does not appear when I connect via USB in the notification bar.
byron00 said:
I have the same problem, no PC recognizes my HTC Thunderbolt. Now change cable and tried with windows xp, 7 and 8. Is there any solution I can not root. I want to change the rom factory rom I do not like but I can not do anything because I do not recognize the usb. Also the menu does not appear when I connect via USB in the notification bar.
Click to expand...
Click to collapse
I'm having the same issue, with an HTC Rezound... just flashed a new rom, need to update boot.img but can't see my device via adb or fastboot... have tried changing usb cables, phone is in FASTBOOT mode... reinstalled HTC Drivers, just get USB Not Recognized error (Windows 8 64-bit)...
Any solution for this?
It seems no matter what I do I keep getting device not recognized. I have tried installing all the drivers via kies, I have turned on usb debugging, uninstalled stuff on the pc. I just can not get this to work, I am using the cable that came with the device and have tried different ports.
It look's like I might be having this issue with windows 7 as well. I am now at least getting it to some times show up in device manager. Currentley when I set it to PTP it pops up as a MTP USB Device but has the error symbol. If I do MTP it shows up as SAMSUNG Mobile USB Composite Device with the error.
For people with windows 8: Once you have the driver downloaded, right click on the file and go to properties. Go to the compatibility tab. Put a check next to run this program in compatibility mode. Choose Windows 7 from the drop down window. This should allow you to install the drivers. Kies never recognized my device, but Odin did. I am now rooted. Good luck! Let me know if you have any questions.
I have a little different problem (also windows 8).
This is a custom built desktop tower that i did a clean win8 install on and it doesnt respond at all when I plug in my N2. Absolutely NOTHING happens, although it works just fine plugged into my wifes LT with windows 8 and I didnt even install any drivers in it.
This same tower works just fine with my two galaxy 3s.
mentalcase87 said:
It look's like I might be having this issue with windows 7 as well. I am now at least getting it to some times show up in device manager. Currentley when I set it to PTP it pops up as a MTP USB Device but has the error symbol. If I do MTP it shows up as SAMSUNG Mobile USB Composite Device with the error.
Click to expand...
Click to collapse
Where can you find the driver? All I can find is using keis to install drivers. If you go to the site it only has a pdf
usb driver
http://www.mediafire.com/?4y1a2opm8o3ihfx
I have Windows 8 Pro x64 (clean installed) on a custom built tower, and haven't had a single issue using ODIN to flash beans rom, or any problems mounting the device to read/write files. I didn't have to do anything crazy or custom to get it working either.. just installed the drivers in the thread about rooting the phone originally with ODIN.
apols said:
I have Windows 8 Pro x64 (clean installed) on a custom built tower, and haven't had a single issue using ODIN to flash beans rom, or any problems mounting the device to read/write files. I didn't have to do anything crazy or custom to get it working either.. just installed the drivers in the thread about rooting the phone originally with ODIN.
Click to expand...
Click to collapse
We are both running with the exact same setup. I built my PC and am using enterprise on the custom build. My laptop at work I am using pro. The drivers provided on the rooting page do nothing for me either. This is so frustrating, and when I had the note 2 on sprint it worked just fine. I am starting to wonder if the issue is the phone.
I had some troubles with my galaxy nexus on win 8 too, with similar rig to yours. I'll see what happens over the weekend when I get my Note set up.
Factory restore fixed the issue.
But still no kies
For anyone having problems, I think this should fix it after the reboot. Let me know.
How to Disable Driver Signature Enforcement in Windows 8:
From the Metro Start Screen, open Settings (move your mouse to the bottom-right-corner of the screen and wait for the pop-out bar to appear, then click the Gear icon).
Click ‘More PC Settings’.
Click ‘General’.
Scroll down, and click ‘Restart now’ under ‘Advanced startup’.
Wait a bit.
Click ‘Troubleshoot’.
Click ‘Advanced Options’
Click ‘Windows Startup Settings’
Click Restart.
Didn't do anything for me :/. My phone doesn't even give me the option to go into other modes to interface with my pc. My windows 8 machine sees the device as Qualcomm CDMA Technologies MSM but says that it is missing drivers. When I try and get it to automatically search for drivers it comes up with nothing even when my system has samsung drivers sitting on it. I have tried it on my Windows 7 machine also and it has had similar results. It's strange because Odin sees my phone. I was able to flash root66 rom on it but after that nothing, I can't even get a factory image back on it, it'll only accept root66.
Try using a USB hub. That worked for me on my Win8 machine. I tried factory reset and it didnt work. I also tried re loading windows and it still didnt work. I plugged into a usb hub and my pc recognized my phone....
Sent from my SCH-I605 using XDA Premium HD app
It's doing the same thing. No dice :/
mentalcase87 said:
It seems no matter what I do I keep getting device not recognized. I have tried installing all the drivers via kies, I have turned on usb debugging, uninstalled stuff on the pc. I just can not get this to work, I am using the cable that came with the device and have tried different ports.
Click to expand...
Click to collapse
It's not an issue of your phone. It's an issue of Window 8. This might work but I can't guarantee you 100%.
You may try to install the drivers in compatibility mode and check if it helps:
a. Right click on setup file.
b. Click on Properties.
c. Click on Compatibility tab.
d. Put a check mark on Run this program in compatibility mode for.
e. Select Windows 7.
f. Put a check mark on Run this program as an administrator under Privilege Level.
I had already done all that. Upon factory restoring it worked without a hitch. I had the same issue on pc's running win7
I recently started to root my LG phone but it failed throughout the process. Now everytime I connect my phone via USB to my computer charges my phone but my computer won't show it or read my phone like it is not connected nor will my phone say it is connected to my computer. I have the drivers downloaded. Is there a way to fix it?
KieKazami said:
I recently started to root my LG phone but it failed throughout the process. Now everytime I connect my phone via USB to my computer charges my phone but my computer won't show it or read my phone like it is not connected nor will my phone say it is connected to my computer. I have the drivers downloaded. Is there a way to fix it?
Click to expand...
Click to collapse
In 1990 to 2002 we have been using Serial Ports (COM1, COM2) and Parallel Ports(LPT1) for devices and they never gave connect problems like USB gives. USB works for some time and then the driver gets damaged or devices not recognized due to Voltage Problems, etc etc.
USB problems are very common these days. First thing you should try is, UNINSTALL DRIVER from PC and Restart PC. Connect PC to Internet, then reinstall latest LG Android Driver and connect phone with USB. Phone will install drivers for Slow Charging mode,...
...then select usb mode to PTP, phone will install driver for PTP,
...then select usb mode to MTP, phone will install driver for MTP,
...then select usb mode to LG Software Mode, phone will install driver for LG Sorftware Mode.
Now your phone is set for every mode you need. Hope this helps
cmahendra said:
In 1990 to 2002 we have been using Serial Ports (COM1, COM2) and Parallel Ports(LPT1) for devices and they never gave connect problems like USB gives. USB works for some time and then the driver gets damaged or devices not recognized due to Voltage Problems, etc etc.
USB problems are very common these days. First thing you should try is, UNINSTALL DRIVER from PC and Restart PC. Connect PC to Internet, then reinstall latest LG Android Driver and connect phone with USB. Phone will install drivers for Slow Charging mode,...
...then select usb mode to PTP, phone will install driver for PTP,
...then select usb mode to MTP, phone will install driver for MTP,
...then select usb mode to LG Software Mode, phone will install driver for LG Sorftware Mode.
Now your phone is set for every mode you need. Hope this helps
Click to expand...
Click to collapse
Hi, i have a Optimus L9 P778 (Argentina) I have problems for connect to the PC(Is a new device i not rooted or installed any). When connect phone with USB and install drivers. But the phone dont showme to select the connection type. When i swicht to PTP or MTP dont install new drivers.... only show this 3 options in my devices:
LG Mobile Phone
LG Mobile(Modem)
LG Mobile(Serial)
In My PC dont showme the device but the LG Support tool detect my phone, version of sw. But it says i need to install the drivers, if I enter an infinite loop saying the same thing.
Thanks for the help...
---------- Post added at 11:29 AM ---------- Previous post was at 11:13 AM ----------
Fixed! I make a Hard reset and now worsk Fine :laugh:.... fuking Android
Hi,
After the most recent update (OTA), when I connect my phone to my PC, regardless of what mode I have the USB set for on the phone, I can no longer connect
to my phone.
It worked flawlessly before.
The Huawei HiSuite also cannot connect (although I don't norm ally use that anyway).
I have tried reinstalling ADB and also HiSuite to no avail.
One thing I do notice is that there was a HDB driver missing. When I rebooted my PC it has now changed to 'USB Composite device' but shows the error
Windows cannot load the device driver for this hardware. The driver may be corrupted or missing. (Code 39)
{Bad Image}
%hs is either not designed to run on Windows or it contains an error. Try installing the program again using the original installation media or contact your system administrator or the software vendor for support. Error status 0x
I've tried to automatically install a driver, again no joy. (Because the device is not recognised, it just says it could not a find a suitable driver).
If I uninstall the device and then plug my phone back in we then start with the HDB device (for which there is no driver according to MS), which upon reboot becomes the 'USB Composite device' again.
So, anyone know how I can fix this? I'd like access to my phone through my PC if possible.
TIA (Thanks in Advance)
I know it's obvious, but have you tried a different usb port.
UrbanBushman said:
I know it's obvious, but have you tried a different usb port.
Click to expand...
Click to collapse
Yes. Front and back of PC as well through a hub.
It makes a sound like it connects, then I get a popup on my phone "Charge only / Transfer files / Transfer photos" and regardless of which one I select, it then disconnects.
Somewhat annoying. It worked okay before latest update.
I've even reinstalled ADB, even though I'm fairly certain this has nothing to do with it.
Thanks for your reply anyway!
[Solved]
I managed to solve this by plugging in my Honor 9. On the device manager page in Windows take a look at the 'USB Composite Device' item and selecting with an exclamation mark against it and right click it and select"Uninstall device" from the menu. When it asks to remove the driver, select yes. Unplug your phone. Reboot your PC. Upon plugging your phone back in, your device will be re-detected and Windows will install the driver correctly.