Windows 10 May Update is changing USB drive letter on its own


Vlad Turiceanu
by Vlad Turiceanu
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Windows 10 v1903 update fails: the USB drive letter has changed

Among the many issues affecting Windows 10 May Update, the USB bugs are some the most common. It seems like Microsoft somehow forgot that computers have USB ports, and are just realizing that now.

USB bugs block Windows 10 v1903 update

The first problem was that the update couldn’t take place if a USB drive or a USB device was inserted into a port. Now, the update stops with an error and changes the drive letter of the ISO USB.

I downloaded the “media creation tool” for win 10 build 1903 and created the windows 10 update 1903 to a usb drive (an ISO image is an option too) Then executed the “setup.exe” on the created usb drive. After a few minutes, the update stop with an error , with the error that the 1903 update can change the drive letter of any USB connected devices, so it could be possible that a usb drive connected as “G:” could become “E:” after the update

As this user said, if you try to install the Windows 10 v1903 update from a ISO on a USB drive, after some time the installation will fail with an error and the letter of the respective USB drive will change.

That’s a problem because Windows will no longer have a valid path of the installation files, thus not being able to complete the install.

This is a pretty odd issue and until now, Microsoft has no solution for it. A possible solution would be to access the drive as a directory link, but is unconfirmed.

Have you encountered a similar issue when installing the Windows 10 May update? If so, how did you managed to solve it?

Leave the answer and any other questions you may have in the comments section below.