My smartphone no longer appears on the PC.

Hello
use the file transfer option

At least take the time to respond!
A thank you is appreciated.
Mark as resolved if your issue has been solved.

Hello
just try with another cable
if you have USB2 and USB3 ports, try on each of them
I had the same issue and it worked

Hello Redbart,
Of course, I click on "accept file transfer" in the small box that appears on the smartphone when I connect it to the USB port of the computer, and nothing happens. The problem is that I can't access it with the PC since it doesn't appear when I check "This PC."

And when I go to "Device Manager," it appears, but when I click it, here's what I have.

And after trying to download the driver, I have what I posted in my first post.
I really don't understand what's going on because everything was working perfectly until now.

Hello Nadellen
I also tried changing the USB port and cable. I also tried connecting another smartphone and my tablet, and I still have the same problem; they do not appear in "this PC" and in the device manager it is impossible to find or update the driver because I always get the same response "MTP USB devices".

Hello,
What is a PC?
Which Windows?
Which version, 32 or 64 bits?
Is everything clear regarding the USB Bus Controller in the Device Manager?
See you later
--
The one who doesn't please upon arrival always does so when leaving.
O Breizh my land, I love my land!

Hello gig29
The laptop is an HP Pavilion Notebook 17" that I've had since November 2015. I'm on Windows 10 64-bit, version 1909 - 18363.836.
Regarding the USB bus controller, here's what is noted

Is it good?

Indeed after 17, G112NF.
I will try the maneuver a little later because I need to take my dog out, who has been looking at me for a while as if to say what is she doing in front of her computer all this time, my apologies. See you later.

Re,
Well, I tried and it's still the same! It’s frustrating! I wanted to see if it worked with my camera, but unfortunately, it's out of battery and to make matters worse, I can't find the charger! When it doesn’t want to work, it just doesn’t! To be continued.

I still plugged my Nikon Coolpix camera into the PC and it doesn't work either. "Windows found drivers for your device but encountered an error trying to install them," still this "MTB USB Devices."

As soon as read, as soon done (or almost)

I had 3 "Unknown Devices", I followed the steps for each of the 3. On the list, there was no USB MTP device but I found "Universal Serial Bus Device" so I selected it and at the end of the process..........it still doesn't work!

What is curious is that in the device manager my ASUS appears when it's plugged in but I can't do anything with it since it can't find the driver, and when it finds it, it can't install it because of this MTP USB devices

We will eventually get there... or not! What is annoying is that before the last updates this week I had no issues (well not this one at least). I uninstalled them but without success, I even did a system restore that caused me other problems (my browsers wouldn't open anymore) but that's solved and I re-downloaded the updates in question since, according to what I had read, they were important. Ah this computing, what a headache, I was more at ease when I was young with my Japy typewriter (yes, I've known).

Good evening to you and thank you again.

gig29, I'll try tomorrow. I ran an sfc scannow earlier and apparently everything is fine.

Thanks again and good night, I'm also going to bed.

Hello,
I just tried but there are no positive results!
I also tried various manipulations indicated on Microsoft Community and still nothing.
While searching on Google, I also found a site that offered to download an MTP driver
https://www.filehorse.com/download-mtp-driver-for-android/
but I hesitate to download it because I don't want to pick up any junk in the process!
Well, I'm starting to despair and get fed up, but being a Scorpio, I am stubborn and keep searching, plus it's raining!

Here I am again
The problem is that I no longer have any Unknown Device since I uninstalled them after message 14, so it’s impossible to follow the procedure.
Well, I’m going to have lunch. See you later for more troubleshooting?

When I open the device manager, my Asus shows up just as I said in my first post

and when I go to Show hidden devices, it appears twice

and it's when I try to find a driver that I can't because of this MTB USB Device
I will try to download the driver with the link.
To be continued

Ah, it's not cool to scare me like that (lol), so I tried using my printer and it's working, but since I'm using it via Wi-Fi, that might be the reason.

I was joking of course, and I really appreciate your effort to try to solve my problems.
Well, I downloaded and executed the driver and it still doesn't work. There were three options "Change" "Repair" "Remove"; I tried the first two and in the end, it still doesn't work.
The problem must therefore be more serious.

Well, just like at the very beginning

Yes, this model is good although mine is black (I'm just kidding)
I downloaded the smartphone driver from the Asus website yesterday but since it's in apk format, we can't use it.

Hello,
I still haven't solved my problem even though I've tried the proposed solutions again. I attempted to transfer my photos from my smartphone to my PC via Bluetooth, but that didn't work either because the connection couldn't be established between the two! I looked on Google to see if it was possible to transfer via Wi-Fi, and yes, it's enough to install a program on both devices—Droid Transfer on the PC and Transfer Companion on the smartphone—and it works, yay! I was able to transfer my photos. Isn't life beautiful! But I would still like to resolve this MTP USB device issue.
I think I'm going to get back to knitting; it will be less complicated than computing!
Have a good day.

Hello gig29
Yes, I hadn't thought of that either.
There's a small problem with Bluetooth (which I have never used until now, so I'm not at all proficient in its use) because the smartphone did not detect the PC; it detected a Freebox instead! (I’m with SFR) maybe from my neighbors? That's why I'm hesitant to use it.
Have a good day too. Is the weather nice in your beautiful region? In the P.O., it’s no longer raining, so that's something.