However, on Saturday, Microsoft announced it had "paused" the rollout, removing the ability for general users to receive the update manually.
The company issued a terse statement acknowledging the problem, but provided little detail on what's causing it, or what users can do to restore the files that are not moved to the Windows Recycling Bin for easy retrieval.
The problem of photos and documents getting deleted by the October 2018 Update - aka Redstone 5 - was identified and reported to Microsoft through the Feedback Hub months ago by multiple Insiders, but was not addressed.
In theory, this means when a new Windows 10 feature update rolls out to the public, all of the major bugs should have been squashed.
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Hold your finger on the message until the forward button appears...then hit forward and all the people you want to forward too ... Simply delete the message and whatever you do, do NOT forward it to friends. "Good Luck!" read the message.
Microsoft has temporarily halted the rollout of its October 2018 update for Windows 10 (version 1809), writing in a page dedicated to the update that it would "investigate isolated reports of users missing some files after updating".
It has also requested users who already downloaded the update not to install it. If so you might take Microsoft's advice of minimising the use of the affected device and getting in touch with Microsoft support. If that doesn't work, the issue escalates to a NTFS file system recovery process, which depends on the missing file data not being overwritten. They have the tools to get you back to a good state.
Microsoft's Your Phone developers have acknowledged that this is not the intended behaviour, though we wonder how such as easily detected issue could have slipped through. One user on the Microsoft support board claimed to have lost 220 gigabytes of files.
Since Microsoft had not started automatically pushing this latest update out, only people who visited "Windows Update" manually and checked for updates installed the latest software version.