Windows 10 KB5001330: Watch out for these critical issues in latest update

Windows 10 KB5001330 issues

Some configurations of Windows 10 are encountering more serious
problems thanks to a recent update “KB5001330”, with users
reporting installation issues, performance issues, temporary
user profile bug and worrying system crash.

Earlier this week, Microsoft published new
April 2021 cumulative updates for supported versions of the
OS. For version 20H2/2004, Microsoft released Windows 10
KB5001330, a mandatory security update aimed at fixing several
vulnerabilities and issues caused by the previous update,
including problems with the printers.

According to multiple reports (1,
4) over on the social media
sites, Feedback Hub and our comments section, it looks as
though there is a growing number of users unable to install the
latest Windows update on their hardware.

If your device is affected and is trying to update directly to
April 2021 security patch, it could fail with one of the
following error messages:

  • 0x800f081f
  • 0x800f0984
  • 0x800f0922

0x800f081f error when downloading KB5001330 update has been
reported by a lot of users in the Feedback Hub and our comments

“Getting aforementioned error on any attempt to install this
update. Have run standard DISM and SFC command, and performed a
basic reset of Windows Update,” a user wrote in the Feedback

“I’m getting a consistent failure of KP5001330 to install with
error code 0x800f0984. This is happening on Surface Studio 2
and Pro 7. This is the second month in a row Microsoft has been
unable to the cumulative update on my machines. The install
pauses at 20%, then again at 73% (different from last month’s
40%), then at 100%, then fails,” another user noted.

Temporary user profile bug

In rare cases, there also appears to be a re-emergence of the
infamous Temporary user profile bug. This bug was last reported
in December and it basically creates a new user profile when
the operating system loads up after applying the cumulative
update. When this happens, user files and settings (such as
wallpaper) could disappear.

“I can no longer get into my computer since the update. It says
“the User Profile Service service failed the sign in. User
profile can not be loaded,” one user told us.

“Same, it logged me into a guest profile,” another user
confirmed the problem in our comment section.

“Wouldn’t let me do anything as not administrator. Ended up
sending it back to the company as it was a new computer and
they reset it,” another user wrote.

Fortunately, there’s a workaround for the reported issue – you
can either roll back the update or manually move the user

FPS drop and Blue Screen of Death

On Reddit, users have reported
that the update is rendering games unusable for some.

Users are reporting game crashes, graphical stuttering and huge
drops in frame rates, but the problem can be resolved by
manually uninstalling the cumulative update. Only some users
have reported these issues on forums and it doesn’t appear to
be as widespread as other bugs.

As usual, there are reports of system crashes and Blue Screen
of Death.

“This update broke Windows for me and others. PC BSOD’d while
updating, saying a certain driver was no longer present or
supported. I let Windows “repair” itself, and the update went
through, then my PC BSOD’d twice in a few hours. I uninstalled
the update. I’m not the only one this has happened to, so I
would suggest not installing this update,” one user told us.

How to fix Windows 10 KB5001330 issues

If you’ve downloaded the April 2021 Patch Tuesday update and
are encountering any issues, the best way to fix the problem is
to uninstall the patch by following these steps:

  • Open up the Settings app.
  • Click ‘Update & Security’.
  • Click ‘Windows Update’
  • Click ‘View update history’.
  • Click ‘Uninstall updates’ then select KB5001330 to
    uninstall it.
  • Reboot.

Microsoft has yet to comment on these new problems and we will
update the article when more details become available.

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