Windows 10 KB4571756: Microsoft announces new known issue

Windows 10 update issues

Microsoft has acknowledged that some of Windows 10’s most
recent updates are causing new problems for some PCs rather
than resolving the underlying bugs.

According to the company,
Windows 10 KB4571756, which is supposed to be a cumulative
update with security patches,
is instead breaking down Linux support. In addition,
Microsoft has quietly acknowledged another bug that creates
‘optional features removal’ warning message.

First off, let’s talk about Windows 10 KB4571756. This
cumulative update was published on September 8 with SSD
defragger fixes and other security improvements, but the
update is causing rather serious problems for some PCs.

According to user reports, Windows 10’s September update could
break down Start Menu and prevent some users from booting to
the desktop. Some have also reported Blue Screen of Death
messages after applying the patch, which could be
related to a new compatibility issue acknowledged by
Microsoft.

In addition, it has been widely reported that this update
breaks down Windows Subsystem for Linux. Fortunately, Microsoft
said they’re aware of
the issues and the company has finally identified the root
cause of the issue.

Microsoft is planning to ship the fix with the next cumulative
update, which is expected to arrive later this month or next
month. If you’ve issues after the update, you can uninstall
KB4571756 by heading to Settings > Update & Security >
Update history > Uninstall updates, and then unblock access
to Windows Subsystem for Linux.

Microsoft admits ‘compatibility error’ warning

In another support documentation, Microsoft has quietly
confirmed that you might get a compatibility error when
installing Windows 10 feature updates if the local system
accounts are blocked in a firewall from accessing the internet
via HTTP.

Microsoft noted that this
issue is caused by Windows 10’s Setup Dynamic Update (DU) being
unable to download required packages for the feature updates.

Microsoft confirmed that they’re working on a proper fix and
these issues will be resolved in an upcoming cumulative update.

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