Windows 11 recently received a new update (Build
22000.282) in preview which fixes a host of bugs, including
one which has been affecting the performance of compatible
processors from AMD. As it turns out, there’s another bug that
could reduce the performance of all machines, at least when you
use File Explorer frequently.
In addition to a cumulative update, Microsoft has also
Windows 11 Build 22478 with redesigned emoji and other
improvements. Build 22478 is from the active branch codenamed
“Nickel”, so that means it’s available to Dev Channel users
It contains the fix for a problem affecting File Explorer’s
command bar. As you’re probably aware, Microsoft has replaced
the traditional File Explorer ribbon with a command bar (set of
quick action buttons). Depending on what you select in
Explorer, you’ll see different action items in the command bar.
The command bar lets you copy, cut, rename, share, and deleted
the selected file or folder, and you can also use it to change
the view of the items. This new command bar has all the
features we need for normal tasks, but it comes with an
unexpected bug that could result in a memory leak.
File Explorer bug slowing down Windows 11 PCs
The command bar reportedly does unnecessary calculations when
users navigate between different folders, resulting in an
“unexpected decrease in performance”. This bug is also
responsible for performance issues when selecting files using
the drag functionality of the operating system.
It also resulted in high memory usage when users selected files
with arrow keys. Explorer is apparently plagued with slow
context menu bugs too, all of which are doubtless pretty
Windows 11 Build 22478 finally fixes the File Explorer command
bar bug that Microsoft describes as the “root cause of
performance issues” for users. Additionally, the “Show hidden
items” option will no longer appear unexpectedly when multiple
instances are open.
It’s worth noting that Microsoft is still testing fixes for
Explorer’s command bar in the Dev Channel and it’ll be ported
to the stable channel next month at the earliest. If the
Explorer issues, or indeed those other performance issues, are
bothering you, then it’s best to downgrade to Windows 10.
That’s because Microsoft is still working on the fix and there
are unintended side-effects of switching to the Dev Channel.
These fixes will be delivered to more users later this year as
part of the Patch Tuesday update.