Unknown USB Device (Device descriptor request failed)

[Temelj]

 Phone no longer wants to connect to a PC (Windows 10) via USB.

Windows Device Manager shows the phone as "Unknown USB Device (Device descriptor request failed)" and the phone does not provide an option to select - charging only, usb file transfer or that third option (MTP).

The Phone does appear to charge via PC USB & normal wall socket genuine charger.

Also, as the battery icon changes to charging - a solid orange led is lit while doing so. But I'm not longer receiving the notification on whether I want to connect my device in File Transfer mode.

Phone has the Android 7.0 update - 32.3.A.0.372

Any help/advice?

PS: Xperia Companion does not detect the phone and cannot be used for a software repair.

UPDATE:
Thanks NeoBeum for the proposed patches to my particular issue.

In summary:

• Disable "USB selective suspend setting" under "Control Panel\Hardware and Sound\Power Options\Edit Plan Settings" in the Advanced Settings.
• Uncheck "Allow the computer to turn off this device to save power" option in Device Manager for the "Universal Serial Bus controllers".

I can confirm that in my case the Xperia Z5 connects to the PC, charges from it and displays the popup "Use USB to - charge, transfer or MIDI". I can also confirm that I can debug applications from Visual Studio directly on the device.

However, I do not accept this as a solution as the windows related power settings should not affect the performance and connectivity of the Xperia Z5. These problems do not persist on other tested platforms/devices (Google Pixel, Samsung S5, Apple iPhone) connecting to the exact same computer. 

I will try another Xperia Z5 Compact device to try replicate these issues.

[NeoBeum]

You need to make sure the screen doesn't turn off, or the android os will disconnect mtp

[NeoBeum]

I'm just showing you some errors that's caused by the software installation partition if it isn't configured correctly.
I was flashing/reflashing/reconnecting/fastbooting my phone this morning while I was testing out Nougat, and I managed to get the error again.

The difficult part is that it won't say SONY Mass Storage - I actually changed it's name, so I could find it faster when these things happen, and also the Class GUID will be different for each machine, just try and find pairs like I have highlighted

[NeoBeum]

In total I think the Xperia can have 6 different USB configurations..

[Lasch]

Hello again! 

If anyone has been reading this thread looking for a solution for a similar problem, I just want to tell what has happened to me.
In february I called the Sony support, and they concluded (as NeoBeum earlier) that there was a hardware failure and advised me to send the unit for a warranty repair. Due to some travelling and other activities I haven't sent the phone in until last week. I got it back yesterday. They have changed the mainboard and USB.

Now the telephone works! As far I can see all the problems I had before are fixed.

So, don't forget hardware problems!   

I want to thank everybody who has been making efforts to help! 

[Mukesh3246]

You can sole this issue by following these simple steps:

https://thewindowscentral.com/device-descriptor-request-failed/

[shoaibameen]

Device descriptor request failed is very common error on device for windows users. There are 3 cases for this error. 1- Users see yellow warning sign along with their device error in the device manager but there is no any problem in the working of device. 2- Device is not working properly. The device of these users won’t appear in the File Explorer. So users not able to use it. 3- Device is not working but the status of device is “working properly”.