Microsoft's work with the new Windows 10 update system has become the most painful and surprising part of the latest version of the operating system. Every major update is considered horrible, waiting for what will break this time. This time, however, Microsoft is now giving users the ability to block the upcoming update in May 2019 for computers that have a connected external storage device or USB devices or SD cards until these peripherals are removed.
In its interest, Microsoft at least knows about a potential problem and takes steps to alert users to this. In the past, such users, mostly outside users, will understand only after the damage has already been done. This time, Microsoft will not even install the update if it detects this particular situation.
Microsoft blames this for inappropriate disk redirection during the update process. In short, this means that USB or SD memory, given on the letter D: can end with E: or F: and cause problems. To be safe, Microsoft just does not allow installing the update in this situation.
Fortunately, the solution is pretty simple. Simply remove the USB flash drive or SD card and restart the process. Interestingly, Microsoft's support page mentions that device redirection also applies to internal hard drives but limits the potential problem to mobile.
The good news is that this will not happen forever. Future updates after May 2019 will no longer require the removal of such external repositories. ZDNet also reports that users who exceed versions of Windows 10 before April 2018 (version 1803) are not strangely affected and will not trigger the warning when updating with such devices.