Windows 11, version 24H2 won't install

So, I have updated Motherboard BIOS, and the chipset drivers (AMD B550 Phantom Gaming 4 Motherboard.

Now, when I run the setup for the iso file, I get a message telling me that it couldnt install becasue I dont have sufficient space on my Windows drive.

I check, and it has 112Gb free out of 229GB. Its an SSD.

So I run the HVIscan_amd64 tool which previously reported on incompatible drivers (now all removed) and it tells me:

VbsGetIssues: 0x00006008

IOMMU required 

Failing to meet 52GB minimum required volume size 

System drive SSD required 

VbsIsRecommended: 0

HVCI incompatible driver scan start...

HVCI: Driver scanning complete

HVCI incompatible driver scan passed!

This just gets better and better

I don't know what the IOMMU error refers to. Searches show its something to do with ebabling memory intergrity or virtualisation support.

I am SERIOUSLY considering booting the machine and installing a ~Linux distro. and to hell with this rubbish.

This has to be one of the most shambolic updates microsoft has ever released

Done this. Removed all drivers listed as non compliant.

Update still fails.

ONLY thing I haven't tried is uninstalling my Norton antivirus rather than just fiddling it for the duration of the update.

I really resent being forced to do this when it hasn't ever caused any issues on prior updates.

But having battered my head against this update process for weeks now, I must just give it a try

I installed the big 24H2 update on my computer (HP 470 G9 laptop, Windows 11 Pro).

It failed several times at first, when I tried to install it in several different ways!

Here are the different steps:

1) It originally appeared for download on Windows Update on Nov 22. I tried to download it 2 times – the download always stopped at 8%

2) It appeared again on Windows Update on Dec 15. Now the download and installation proceeded to the end – but then the installer started automatically undoing the changes made to the computer --> reverted back to v. 23H2

3) I then tried installing from the ISO file --> failed (for some reason it reported a problem with the installation language (?) --> could not select the option at all: “Keep my files and apps”

**4) The update finally went well and without any problems with this method:**💻👍👍

Windows 11 Installation Assistant

I would like to emphasize that this is one of the three official installation methods recommended by Microsoft!

Microsoft: This is the best option for installing Windows 11 on the device you’re currently using.

https://www.microsoft.com/en-us/software-download/windows11/

Note! It is important to note that in order to proceed the installation process, everyone must first pass the WindowsPCHealthCheck (which can be launched from the link at the top of the downloaded Windows 11 Installation Assistant -application window)

I've tried to update to the W24H2 version numerous times I've the last 2 weeks. Sometimes from the usage offered through the Windows updates and some times via the downloaded ISO file.

Fails every time.

Error message is 0xc1900101 -- 0x20017. "The installation failed in the SAFE_OS phase with an error during BOOT operation.

I've tried the disk and SFC options often suggested. Cleared the update cache, disabled my antivirus (Norton 360), and always get the same result. Update goes right through too 100% completed, then restarts showing the error above.

I've looked on

In the setup error log file in windows_bt\sources\panther folder, along with most of the other logging files created.

No clue there apart from an entry saying unable to delete the registry key which contains the update....... Subjects.

Hklm\something.

All the advice suggests updating your third party drivers since this is the usual cause of the error listed.

Unfortunately I have updated all the drivers I can, but it would be really helpful if the loss told me WHICH driver was the cause of the problem.

I've given up trying now until Microsoft can sort out a decent update version which either works or can give more useful logging into.

Not going to try a clean install from the iso because I'm not convinced it would work either, and can't face the hassle of reinstalling all my apps

Hello, Fonzeh

Welcome to the Microsoft Community.

Hello, thank you for your feedback on your issue here, it seems that your current attempts to update win11 24H2 are not installing properly.

First of all, thank you for your feedback here, it seems that your current attempts to install manually using the ISO have also failed.

There may be some system issues, you can try to fix your system and drivers by following the steps below:

1. Clear Windows Update Cache

Sometimes corrupted update files can cause the installation to fail, and clearing the Windows Update cache may help:

Stop the Windows Update service:

Open Command Prompt as an administrator (right-click the Start menu > select Command Prompt (Administrator) or PowerShell (Administrator)).

Enter the following command:

net stop wuauserv

Delete the update cache:

Go to the C:\Windows\SoftwareDistribution\Download folder and delete all files in it.

Restart the Windows Update Service:

Enter the following command:

net start wuauserv

2. Run DISM and SFC scans

Corrupt system files may prevent the update from installing. Running a DISM (Deployment Image Service and Management Tool) and SFC (System File Checker) scan can help fix these issues:

DISM:

Open a command prompt as administrator.

Enter the following command:

DISM /Online /Cleanup-Image /RestoreHealth

This may take some time, please be patient.

SFC:

After DISM is complete, type:

sfc /scannow

Let it finish and then try the update again.

Disclaimer: Running Microsoft Safety Scanner can help you check if the system is disturbed or malicious software exists. To avoid any trouble for you, please back up all your personal files first to ensure you do not lose data.  

 

3. Updating Drivers

Make sure your drivers, especially the graphics card and chipset drivers, are up to date. Outdated drivers may prevent the update from installing. You can visit the official website of the brand of your computer to download them.

After that you can try the override installation method to repair your system and install 24H2.

Let’s try performing an in-place install or in-place upgrade which will refresh your Windows files and operating system without removing files or applications. That being said, we always recommend that if you have important data, you should back it up before making large system changes. If you want to back up your data first, please do so. Once you are done backing up, you can follow the steps in the following guides: How to run In-place upgrade in Windows 11 - Microsoft Community 

Best regards

Bobhe | Microsoft Community Support Specialist

3. is not very good. I been reading fixes for 9 weeks to one of my laptop issues.

Essentially you got the safe boot issues on the first boot and Microsoft pushes drivers that don't work. Had that. The ISO where is says select defaults... no don't update them you get duff ones. Always change this setting not to recommended.

Then the failed second boot with suspect drivers or virus program. Endless do this that and the other as fixes. There is a simple Microsoft tool that can be used to identify duff drivers in the second boot. You just run it and pipe out the results and look at the drivers and Google them.

That tool is this:

Memory integrity system readiness scan tool

>> Version: 10.0.25884.1000 Date Published: 6/15/2023 File Name: hvciscan_amd64.exe hvciscan_arm64.exe File Size: 41.9 KB 21.9 KB The memory integrity system readiness scan tool, hvciscan_amd64.exe and hvciscan_arm64.exe, is used to check a system for compatibility with memory integrity. Memory integrity is a virtualization-based security (VBS) feature available in Windows 10, Windows 11, and Windows Server 2016 or higher. Memory integrity and VBS improve the threat model of Windows and provide stronger protections against malware trying to exploit the Windows kernel. VBS uses the Windows hypervisor to create an isolated virtual environment that becomes the root of trust of the OS that assumes the kernel can be compromised. Memory integrity is a critical component that protects and hardens Windows by running kernel mode code integrity within the isolated virtual environment of VBS. Memory integrity also restricts kernel memory allocations that could be used to compromise the system, ensuring that kernel memory pages are only made executable after passing code integrity checks inside the secure runtime environment, and executable pages themselves are never writable. The memory integrity system readiness scan tool notifies you if the device has any known compatiblilty issues. For more information about the types of issues that the tool may report, see https://learn.microsoft.com/windows-hardware/design/device-experiences/oem-hvci-enablement. <<

It worked a dream.

This my worked example that fixed it for me:

We downloaded hvciscan_amd64.exe

Go to CMD and run as hvciscan_amd64.exe > output.txt

Open in notebook and gave: >> VbsGetIssues: 0x00000000 VbsIsRecommended: 1 HVCI incompatible driver scan start... HVCI: "C:\WINDOWS\System32\Drivers\PxHlpa64.sys" failed with compliance failure mask 00000202 HVCI: Driver scanning complete HVCI: scan get result failed. <<

PxHlpa64.sys was the only troublesome driver....

Google gave: https://answers.microsoft.com/en-us/windows/forum/all/new-pc-has-pxhlpa64sys-driver-incompatible-with/1122bd64-57a7-41f7-a762-b13dac158562

Adobe DVD driver decided to remove it:

From an Admin Command Prompt, run: reg export "HKLM\SYSTEM\CurrentControlSet\Services\PxHlpa64" C:\PxHlpa64.reg

You should see the message "The operation completed successfully."

Then, run these two commands: sc.exe delete PxHlpa64

ren C:\WINDOWS\system32\drivers\PxHlpa64.sys PxHlpa64.sys.old

Restart Windows.

The do the 24h2 update again. This exams the failed second boot drivers.

I don't why this isn't published more !.