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According to the description of the fixes in KB4497935 the bug with the USB devices should have been fixed, but it still does not allow updates with installation media on a USB stick.
Fix description:
"Addresses an issue that may cause an external USB device or SD memory card to be reassigned to an incorrect drive during installation. For more information, see "This PC can't be upgraded to Windows 10" error on a computer that has a USB device or SD card attached"
I tried to do an update with installation media build 18362.145 on a system already at 18362.145 and still gets the error message below:
Is there a fix yet for this bug in the v 1903 release ? Which build do I need to get this bug fixed ?
I know that I can work around the issue installing from a local drive.
Also if I try upgrading from1903 to a preview 20H1 build 18908.1000 using a USB stick the update completes without this message.
I hope we don't need to wait for 20H1 to get this bug resolved.
Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.
hi,
I did it and have no issues. Maybe it is your device issue.
Hello,
What USB device did you use ?
If you read the thread you can see that not all USB devices are affected.
Also windows installer only blocks some USB devices during an upgrade of an existing system and not on a clean install.
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Good to see that you get it work.
It seem that there is differences on USB devices depend on is it memory stick or external disk.
Most of the time I use WU to update Insider previews, so I use USB -installer
only for clean install's, but I start testing this issue just for fun on rainy Sunday.
That thread is in Insider forum, but "May Update 1903 is out" whole discussion is about released v1903, not previews.
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hi,
It is a usual USB drive, do not know how to call it. I reinstalled Win.
I can confirm that previews 19H1 and 20H1 work fine with the same USB devices that are failing with released 1903. I did several upgrades with the same USB sticks.
They specifically added the block in 1903 to avoid the problem of drive letter reassignment, now that they fixed that problem they need to remove the block in 1903 installer.
hi,
It is a usual USB drive, do not know how to call it. I reinstalled Win.
What do you mean 'usual' ?
Is it a flash drive or a regular HDD ?
What is the brand, the model, and the size in GB ?
Reinstall ? Do you mean , did you reinstall from scratch or di you update and existing system ?
