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, 2, 3, 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 error when downloading KB5001330 update has been reported by a lot of users in the Feedback Hub and our comment section.
“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 Hub.
“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 files.
FPS drops 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” its self, 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.
@WindowsUpdate are you aware of issue on Zen 2 or 3 CPU, amd updating to KB5001330 makes Windows unbootable?
— Eric Smith (@Cmoney_319) April 15, 2021
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.
Microsoft has yet to comment on these new problems and we’ll update the article when more details become available