KB5001391 is another Windows update that you should not install, except..

Microsoft released the Windows update KB5001391 on April 28, 2021 as an optional update for Windows 10 version 2004 and 20H2. The update falls into the C-category of updates for Windows, which means that it includes only non-security fixes and that installation is not mandatory.
In fact, Windows Update will display the update when it is opened but it is up to the administrator of the system to start the installation of the patch manually.
The update fixes a number of issues, including a memory usage growth issue in lsass.exe that causes the system to become unusable, a high CPU usage issue caused by race conditions, and an issue with a deadlock in NTFS.
It is also the update that introduces Microsoft's News and Interests widget on the Windows 10 taskbar. The feature is being rolled out gradually to all devices that have the update installed.
Why you should not install KB5001391 or any other optional update
KB5001391 is an optional update. Microsoft releases these to collect Telemetry data to discover issues before the update is released on the second Tuesday of the following month.
While organizations and administrators may use the update for testing, it is generally not a good idea to install the update on production machines.
Preview updates should be considered beta, which means that they may introduce new issues on machines running Windows 10.
Preview updates caused all kinds of issues on devices in the past, from bluescreen errors and crashes to performance issues.
Microsoft lists known issues on the support page of the update. For KB5001391, three issues are listed that are all long-standing.
Final update releases, e.g. those on the second Tuesday of a month, may also introduce issues, but Microsoft is fixing issues in updates released for preview before these updates are released as final versions for all devices running Windows 10.
Reasons for installing optional updates
Optional updates should not be installed on most Windows 10 devices. There are legitimate reasons for installing these updates:
- For testing purposes -- The optional updates give system administrators about two weeks to run tests before the final version of these updates are released. It is helpful, as it enables administrators to make sure that the update installs and runs fine on systems, or to spot issues quickly to prevent the installation of updates until the issues are fixed-
- For fixing purposes -- All optional updates include fixes for issues that users may experience when they work on Windows 10 devices. Bugs that affect users critically may be fixed by these updates, and it is often a good idea to install these to resolve the issues about two weeks before the final update release.
Closing Words
Optional updates provide a preview of the fixes that will be introduced on the coming Patch Tuesday, this makes them ideal for testing purposes and quick fixes for critical issues. The majority of users should ignore preview updates because of their beta status and the potential for introducing unmentioned issues on Windows 10 devices.
Now You: do you install optional Windows updates?


What mental age of reader are you targeting with the first sentence? 10?
Why not write an article on how to *avoid* upgrading from W10 to W11. Analogous to those like me who avoided upgrading from 7 to 10 for as long as possible.
If your paymaster Microsoft permits it, of course.
5. Rufus
6. Ventoy
PS. I hate reading these “SEO optimized” articles.
I used Rufus to create an installer for a 6th gen intel i5 that had MBR. It upgraded using Setup. No issues except for Win 11 always prompting me to replace my local account. Still using Win 10 Pro on all my other PCs to avoid the bullying.
bit pointless to upgrade for the sake of upgrading as you never know when you’ll get locked out because ms might suddenly not provide updates to unsupported systems.
ps…. time travelling?
written. Jan 15, 2023
Updated • Jan 13, 2023
This happens when you schedule a post in WordPress and update it before setting the publication date.
Anyone willing to downgrade to this awful OS must like inflicting themselves with harm.
I have become convinced now that anybody who has no qualms with using Windows 11/10 must fit into one of the following brackets:
1) Too young to remember a time before W10 and W11 (doesn’t know better)
2) Wants to play the latest games on their PC above anything else (or deeply needs some software which already dropped W7 support)
3) Doesn’t know too much about how computers work, worried that they’d be absolutely lost and in trouble without the “”latest security””
4) Microsoft apologist that tries to justify that the latest “features” and “changes” are actually a good thing, that improve Windows
5) Uses their computer to do a bare minimum of like 3 different things, browse web, check emails, etc, so really doesn’t fuss
Obviously that doesn’t cover everyone, there’s also the category that:
6) Actually liked W7 more than 10, and held out as long as possible before switching, begrudgingly uses 10 now
Have I missed any group off this list?
You have missed in this group just about any professional user that uses business software like CAD programs or ERP Programs which are 99% of all professional users from this list.
Linux doesn’t help anyone who is not a linux kid and apple is just a fancy facebook machine.
Microsoft has removed KB5029351 update
only from windows update though
KB5029351 is still available from the ms update catalog site
1. This update is labaled as PREVIEW if it causes issues to unintelligent people, then they shouldn’t have allowed Preview updates ot install.
2. I have installed it in a 11 years old computer, and no problems at all.
3. Making a big drama over a bluescreen for an updated labeled as preview is ridiculous.
This is probably another BS internet drama where people ran programs and scripts that modified the registry until they broke Windows, just for removing stuff that they weren’t even using just for the sake of it.
Maybe people should stop playing geeks and actually either use Windows 10 or Windows 11, but don’t try to modify things just for the sake of it.
Sometimes removing or stopping things (like defender is a perfect example) only need intelligence, not scripts or 3rd party programs that might mess with windows.
Windows 11 was a pointless release, it was just created because some of the Windows team wanted to boost sales with some sort of new and improved Windows 10. Instead, Microsoft cannot support one version well let alone two.
Windows 11 is the worst ugly shame by Microsoft ever. They should release with every new W11 version a complete free version of Starallback inside just to make this sh** OS functionally again.
motherboard maker MSI has recently released a statement regarding the “unsupported processor” blue screen error for their boards using Intel 600/700 series chipsets & to avoid the KB5029351 Win11 update:
https://www.msi.com/news/detail/MSI-On–UNSUPPORTED-PROCESSOR–Error-Message-of-Windows-11-Update-KB5029351-Preview-142215
check out the following recent articles:
Neowin – Microsoft puts little blame on its Windows update after UNSUPPORTED PROCESSOR BSOD bug:
https://www.neowin.net/news/microsoft-puts-little-blame-on-its-windows-update-after-unsupported-processor-bsod-bug/
BleepingComputer – Microsoft blames ‘unsupported processor’ blue screens on OEM vendors:
https://www.bleepingcomputer.com/news/microsoft/microsoft-blames-unsupported-processor-blue-screens-on-oem-vendors/
While there may be changes or updates to the Windows 10 Store for Business and Education in the future, it is premature to conclude that it will be discontinued based solely on rumors.
My advice, I left win 15 years ago. Now I’m a happy linux user (linuxmint) but there is Centos, Fedora, Ubuntu depending on your needs.
motherboard maker MSI has recently released new BIOS/firmware updates for their Intel 600 & 700 series motherboards to fix the “UNSUPPORTED_PROCESSOR” problem (Sept. 6):
https://www.msi.com/news/detail/Updated-BIOS-fixes-Error-Message–UNSUPPORTED-PROCESSOR–caused-BSOD-on-MSI-s-Intel-700-and-600-Series-Motherboards-142277
I try to disable the Diagnostics Tracking Service (Connected Devices Platform User Services) but it wont let me disable it, any help will be greatly appreciated.
Tank you for your help