Windows 10: 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?

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windows xp installation and dual core am

could someone please list the steps they follow to install windows with a dual core processor and windows xp service pack to. I'm reletively new to amd dual core and i feel i'm missing a step. All help will be appreciated. thanx

 

Windows Updates failed to instal

I just did step one and they have just all installed.... thank you so much.... it was quite frustrating having that update window pop up every 5 minutes and failing to instal every time

Thanks mate

 

Windows Updates failed to instal

I'm not sure how differant XP media center Edition is but you could clear the history \ cache if these folders are there.

Step 1 Register DLL files.

=================

By trying this step, we can check if the update engines are working properly.



1. Close all instances of Internet Explorer.

2. Click Start and Run, type "Regsvr32 atl.dll" (without quotes) in the Open box and click OK.



Note: There is a space between regsvr32 and atl.dll



3. Similarly, one by one, register the files listed below:



Regsvr32 msxml3.dll

Regsvr32 wuapi.dll

Regsvr32 wuaueng.dll

Regsvr32 wuaueng1.dll

Regsvr32 wups2.dll

Regsvr32 wucltui.dll

Regsvr32 wups.dll

Regsvr32 wuweb.dll

Regsvr32 qmgr.dll

Regsvr32 qmgrprxy.dll

Regsvr32 jscript.dll



Note: If you encounter errors while registering any of these files then skip that file and continue with the next one.



If the issue persists, let's move on to the steps below to verify Windows Update services and temporary folders.



Step 2 Verify the relevant Windows Update services.

=========================================

1. Click Start->Run, type "services.msc" (without quotation marks) in the open box and click OK.

2. Double click the service "Automatic Updates".

3. Click on the Log On tab, please ensure the option "Local System account" is selected and the option "Allow service to interact with desktop" is unchecked.

4. Check if this service has been enabled on the listed Hardware Profile. If not, please click the Enable button to enable it.

5. Click on the tab "General "; make sure the "Startup Type" is "Automatic" or "Manual". Then please click the button "Stop" under "Service Status" to stop the service.

6. Then please click the button "Start" under "Service Status" to start the service.

7. Please repeat the above steps with the other services:



Background Intelligent Transfer Service

Event Log

Remote Procedure Call (RPC)



Note: Event log service is enabled on all of the hardware profiles; this service does not have an option to enable or disable on certain hardware profile.



If it still does not help, let's proceed to step 3.



Step 3 Reload the Update temporary folders.

===================================

One possible cause is that the temporary folder for Windows Update is containing corrupted files. Let's erase all the files there to get the system clean.



1. Click Start, Run, type: cmd and press Enter. Please run the following command in the opened window.



Net stop WuAuServ



2. Click Start, Run, type: %windir% and press Enter.

3. In the opened folder, rename the folder SoftwareDistribution to Sdold.

4. Click Start, Run, type: cmd and press Enter. Please run the following command in the opened window.



Net start WuAuServ



Please test the Windows Update website and let me know the result. If the issue persists, to clarify the issue and provide more accurate troubleshooting steps, please assist me in collecting the following information.