Windows 10: USB Flash Drive not showing up in file explorer

I have two computers side by side. I know the flash drives are good because they work on my other computer. When I plug either of them into my main PC, I hear the "ding" that they are being detected, but they won't show up in my file explorer with my other drives. I have checked device manager and disk manager and don't see them in there either. I have tried multiple USB ports on the PC.Appreciate any insight. The only reason I am trying to use them is because I need one to run MemTest86 for a blue screening issue I am dealing with: here. My computer is newer and has pretty good equipment:

:)

 

USB flash drive(s) not showing in File Explorer

I believe this started with the 720 (1909 18363.720) Windows Update but I'm not sure. I'm going to try backing out the latest WU in a bit but wanted to post the problem here before doing so.

File Explorer is not seeing any USB Flash drive or mounted ISO, but I can look at them if I enter the drive letter directly in File explore:


I have a Win10XPE Rescue flash drive inserted and it has been assigned drive I:
Code:

File Explorer doesn't see it.





If I enter I: directly in File Explorer address area it shows correctly:

 

Copying movie to Flash Drive

Hi Todd,

One way on how to save and move files to a flash drive is by using the File Explorer in Windows 10. To assist you with your concern, to save your movie file to a flash drive, we suggest that you follow these steps:

• Connect your USB flash drive to your PC.
• Navigate to the folder or location where you save your movie files.
• Right-click on the movie file and select
  Copy.
• Right-click on the Start menu, and select
  File Explorer.
• On the left-pane, double-click on This PC.
• Double-click on the drive letter that correspond to your USB flash drive.
• Right-click and select Paste.
• Wait for the process to complete the transfer.
• Once you’re done, you can safely remove your USB flash drive.

Let us know if the solution above works for you.

 

USB flash drive(s) not showing in File Explorer

Windows 10 Pro, 1909 build 18363.720, not seeing this issue myself, however I had a problem with a flash drive showing files I had deleted as if they were still on the drive, went into Device Manager, show hidden devices and uninstalled all greyed out drives under disk drives and storage volumes which has done the trick for that issue.