Update fails windows 2025 Azure VM Install error - 0x800736b3

Henry Admin 0

My Azure VM Server2025 is failing on this update (the previous incarnations of the patch 2025-01 and 2024-12 also failed but have been superseded)

"2025-02 Cumulative Update for Microsoft server operating system Version 24H2 for x64-based Systems (Hotpatch capable) (KB5052105)"

Any ideas ?

Srinud 3,855 Reputation points Microsoft External Staff

2025-02-21T16:12:10.49+00:00

Hi Henry Admin,
Thank you for reaching out to us on the Microsoft Q&A forum.

Since KB5052105 is Hotpatch-capable and intended for Windows Server 2025 Datacenter/Standard editions connected to Azure Arc:

Ensure the VM is properly registered with Azure Arc. In the Azure Portal, go to "Azure Arc" > "Machines" and confirm your VM is listed and connected.

CoHotpatch is enabled by default on Azure for Windows Server 2025 Datacenter Azure Edition, If you are using Standard or another edition, check if it’s subscribed to Hotpatch servicing.

Run this PowerShell command on the VM:

Get-HotFix -Id KB5052105

After that you can check the Windows Update Logs and review, "WindowsUpdate.log" gets generated.

PS: Get-WindowsUpdateLog

Also, Clear Windows Update Cache/Check Disk Space Check for Pending Reboots:

PS: Test-Path "HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Auto Update\RebootRequired"

And try to manually install the update via PowerShell Also look for events related to update failures in the Event Viewer (eventvwr.msc) under "Windows Logs" > "System" or "Application."

Ps: wusa.exe "path\to\kb5052105.msu"
If you have any further queries, please let us know in the comment.
Henry Admin 0 Reputation points

2025-02-24T13:05:04.2333333+00:00

It's an Azure Vm - Doesn't appear in the ARC list and you can't add an azure machine with the script
Henry Admin 0 Reputation points

2025-02-28T13:06:52.31+00:00

This is infuriating. ITS AN AZURE VM THEREFORE CANNOT BE IN AZURE ARC !

The Get-HotFix -Id KB5052105 tries only to find a localhost based update

1 answer

Nikhil Duserla 4,755 Reputation points Microsoft External Staff

2025-02-25T13:52:24.1933333+00:00
Hi @Henry Admin,

Thank you for reaching out to us on the Microsoft Q&A forum.

Based on the description, I understand your question is related to update failure.

Run command in cmd: sfc /scannow

Windows Resource Protection found corrupt files and successfully repaired them.

Run command: Dism /Online /Cleanup-Image /restoreHealth

To scan and repair potential corruption within your current Windows system image.

Create folder C:\temp\cab and download the update from Microsoft Update Catalog to C:\temp.

Expand the .msu file to extract the .cab file by running below command in CMD:

expand -F:* C:\temp\{.msu file name with extension} C:\temp\cab

You will get a .cab file from last step, use the following DISM command to add package:

Dism /online /add-package /packagepath:c:\temp\cab\{.cab file with extension}

If there is no error, reboot the machine

I will recommend you refer to this link if the issue still persists-https://answers.microsoft.com/en-us/windows/forum/all/error-update-0x800736b3/85a56759-67a7-4fe5-bb66-47fe9d03924c

If you have any further queries, do let us know.
Please sign in to rate this answer.
Henry Admin 0 Reputation points

2025-02-25T16:03:02.6733333+00:00

Cannot find the correct download - it only lists KB5051987 for the 2025-02 Cumulative for server 2025

Nikhil Duserla 4,755 Reputation points Microsoft External Staff

2025-02-26T17:31:06.0233333+00:00

Hi Henry Admin,

I totally understand what exactly you are looking for.

Hotpatch first establishes a baseline with the current Cumulative Update for Windows Server. You can manage and apply updates using the Azure portal and Azure Update Manager. Azure Automanage for Windows Server with Hotpatch is a capability that enables customers to apply security updates without restarting* devices. This will keep virtual machines up-to-date and secure, with higher availability and a reduced number of patch Tuesday restarts. Customers will be able to manage updates using the Azure portal or Azure Command Line Interface, with enhanced patch orchestration using Azure Update Management.

Please refer to this How Hotpatch works- https://learn.microsoft.com/en-us/windows-server/get-started/hotpatch#how-hotpatch-works.

Enroll devices to receive Hotpatch updates (Preview)- https://learn.microsoft.com/en-us/windows/deployment/windows-autopatch/manage/windows-autopatch-hotpatch-updates#enroll-devices-to-receive-hotpatch-updates

To benefit from Hotpatch updates, devices must meet the following prerequisites:

Operating System: Devices must be running Windows 11 24H2 or later.

VBS (Virtualization-based security): VBS must be enabled to ensure secure installation of Hotpatch updates.

Latest Baseline Release: Devices must be on the latest baseline release version to qualify for Hotpatch updates. Microsoft releases Baseline updates quarterly as standard cumulative updates. For more information on the latest schedule for these releases, see Release notes for Hotpatch.

Hotpatch is enabled by default on Azure for Windows Server 2025 Datacenter Azure Edition.

If this answers your query, do click Accept Answer and Upvote for was this answer helpful. And, if you have any further query do let us know. We are happy to assist you!

Henry Admin 0 Reputation points

2025-02-28T13:07:44.08+00:00

This is infuriating. ITS AN AZURE VM THEREFORE CANNOT BE IN AZURE ARC !

The Get-HotFix -Id KB5052105 tries only to find a localhost based update

Henry Admin 0 Reputation points

2025-02-28T13:07:56.0533333+00:00

This is infuriating. ITS AN AZURE VM THEREFORE CANNOT BE IN AZURE ARC !

The Get-HotFix -Id KB5052105 tries only to find a localhost based update

Nikhil Duserla 4,755 Reputation points Microsoft External Staff

2025-02-28T13:15:06.7666667+00:00

Hi Henry Admin,

We have sent you a private message to continue the discussion.

Henry Admin 0 Reputation points

2025-03-03T11:25:02.8633333+00:00

Didn't get a private message

Nikhil Duserla 4,755 Reputation points Microsoft External Staff

2025-03-03T11:29:09.32+00:00

Hi @Henry Admin,

Kindly let us know what we could have done better to improve the answer and make your engagement experience good.

The answer which I have provided is for Azure VM and Azure Arc.I apologize for the confusion and any frustration this has caused. Let's focus on resolving the update issue for your Azure VM running Windows Server 2025 without considering Azure Arc.This update will be downloaded and installed automatically from Windows Update.

The failure of the 2025-02 Cumulative Update for Microsoft Server 2025 on Azure VMs may be due to known issues with the update itself, such as compatibility problems or insufficient resources.

If you are using Windows Server container base images, custom images, or any other combination of publisher, offer, and SKU aren't supported.

It's advisable to check the Windows Update history for error codes, review the Event Viewer logs. If you have any further queries, do let us know.
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