514 questions with Azure Virtual Machine Scale Sets tags

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VMSS manual upgrade (Uniform mode) — resizing D2s_v3 instances to D4ls_v5 via model update + Instance Upgrade: confirming behavior, RI implications, and precautions

Hi all, We're running a Virtual Machine Scale Set (Uniform orchestration mode) with 3 instances. Originally 1 instance was on Standard_D4ls_v5 and 2 were on Standard_D2s_v3. Since D2s_v3 is being deprecated, However, checking individual instance details…

Azure Virtual Machine Scale Sets
Azure Virtual Machine Scale Sets

Azure compute resources that are used to create and manage groups of heterogeneous load-balanced virtual machines.

514 questions
asked 2026-07-08T14:43:25.23+00:00
K Yogesh 0 Reputation points
commented 2026-07-11T16:03:10.18+00:00
Vinodh247-1375 43,506 Reputation points Volunteer Moderator
1 answer

InternalOperationError while scaling VMSS

I am currently unable to scale one of my scale sets in or out - all scaling attempts fail with an InternalOperationError whether performed in the portal, CLI or via the API. Other scale sets appear unaffected. I can also make other changes to the VMSS…

Azure Virtual Machine Scale Sets
Azure Virtual Machine Scale Sets

Azure compute resources that are used to create and manage groups of heterogeneous load-balanced virtual machines.

514 questions
asked 2026-07-09T09:07:43.2533333+00:00
Mark Carrington 0 Reputation points MVP
answered 2026-07-10T12:22:29.8633333+00:00
Alex Burlachenko 24,145 Reputation points MVP Volunteer Moderator
1 answer

I am not able to configure auto-scaling for my existing VMSS node pools for my AKS cluster

I have a private AKS cluster, with two VMSS node pools, one for system and one for user. The node pool, when created, is preconfigured with manual scaling. However, I want to leverage the auto-scaling feature. For that I applied the below command, where…

Azure Virtual Machine Scale Sets
Azure Virtual Machine Scale Sets

Azure compute resources that are used to create and manage groups of heterogeneous load-balanced virtual machines.

514 questions
asked 2026-06-20T17:00:49.8933333+00:00
cargobuddy 20 Reputation points
commented 2026-06-23T14:35:41.4633333+00:00
cargobuddy 20 Reputation points
1 answer

Unable to Create Empty Flexible VMSS for Existing VM Migration – Managed Disk Validation Error

While creating a Flexible VMSS (without a scaling profile) to later attach the existing VM, every deployment attempt fails with the following error: {   "error": {     "code": "BadRequest",     "message":…

Azure Virtual Machine Scale Sets
Azure Virtual Machine Scale Sets

Azure compute resources that are used to create and manage groups of heterogeneous load-balanced virtual machines.

514 questions
asked 2026-06-23T11:01:28.05+00:00
Mohit Kumar (Capgemini America Inc) 0 Reputation points Microsoft External Staff
answered 2026-06-23T11:18:23.0766667+00:00
Manish Deshpande 7,530 Reputation points Microsoft External Staff Moderator
0 answers

Azure VMSS Image Build Failure - WINDOWSSERVER.1P 2022-DATACENTER-AZURE-EDITION

InvalidParameter: One or more images referenced were not found This error was found in the customization log. We use              "publisher": "MicrosoftWindowsServer",             "offer": "WindowsServer",      …

Azure Virtual Machine Scale Sets
Azure Virtual Machine Scale Sets

Azure compute resources that are used to create and manage groups of heterogeneous load-balanced virtual machines.

514 questions
asked 2026-06-15T17:22:15.0966667+00:00
Sophia S 20 Reputation points Microsoft Employee
commented 2026-06-17T00:10:52.0333333+00:00
Hemalatha 14,700 Reputation points Microsoft External Staff Moderator
1 answer

While updating image reference, portal shows “No existing galleries in subscription"

We are trying to migrate a VMSS from EOL .NET 6 (WS2022 Marketplace image) as part of Project Standard ST0002 compliance While changing image reference (VMSS → Operating system → Change image reference), Azure Compute Gallery shows “No existing…

Azure Virtual Machine Scale Sets
Azure Virtual Machine Scale Sets

Azure compute resources that are used to create and manage groups of heterogeneous load-balanced virtual machines.

514 questions
asked 2026-05-25T00:55:52.06+00:00
Anil Mekala (INFOSYS LIMITED) 0 Reputation points Microsoft External Staff
answered 2026-06-01T09:48:12.6066667+00:00
Nikhil Duserla 9,940 Reputation points Microsoft External Staff Moderator
1 answer One of the answers was accepted by the question author.

Unable to create A Virtual Machine scale set in West US 2 region(spec: 2025-datacenter-azure-edition and Standard_DC4as_v6)

Hello Team, I am trying to create multiple VMSS in multiple regions, but out of 3, 2 of them were created successfully but one is failing with following error: Error: 'PatchMode' must be set to 'AutomaticByPlatform' for resources created with…

Azure Virtual Machine Scale Sets
Azure Virtual Machine Scale Sets

Azure compute resources that are used to create and manage groups of heterogeneous load-balanced virtual machines.

514 questions
asked 2026-05-06T14:16:24.3566667+00:00
Nishtha Agrawal 20 Reputation points Microsoft Employee
edited a comment 2026-05-18T12:35:00.4433333+00:00
Hemalatha 14,700 Reputation points Microsoft External Staff Moderator
2 answers

Unable to deploy VM sizes despite approved quota

My subscription has approved quota (65 vCPUs available) for the following VM families in EAST US: Bsv2 Easv5 Easv6 However, all VM sizes still show “Size not available” and “Request quota” in the Azure Portal. Deployment fails even though quota is…

Azure Virtual Machine Scale Sets
Azure Virtual Machine Scale Sets

Azure compute resources that are used to create and manage groups of heterogeneous load-balanced virtual machines.

514 questions
asked 2026-04-16T08:26:15.8266667+00:00
kamran 0 Reputation points
edited the question 2026-05-18T09:59:45.32+00:00
Ana M 0 Reputation points Moderator
2 answers

Practice lab question on how can you automate and manage custom scalable Azure VM based infrastructure solutions (Expert Level)

In this challenge, you will create a custom image, use the image to create a scale set with availability zones, configure autoscale, and deploy an update to the scale set using a custom script extension. What steps, cmdlets using Azure Portal, CLI and…

Azure Virtual Machine Scale Sets
Azure Virtual Machine Scale Sets

Azure compute resources that are used to create and manage groups of heterogeneous load-balanced virtual machines.

514 questions
asked 2026-05-05T09:28:26.2266667+00:00
Nelson Narayan 20 Reputation points
edited a comment 2026-05-06T15:23:56.2766667+00:00
Himanshu Shekhar 6,790 Reputation points Microsoft External Staff Moderator
1 answer

Virtual Machine Scale Set Jump to 100% CPU Usage

Since 4/23/2026, we saw one of our virtual machine scale set instances jump to 100% CPU randomly. Just last night it seems the virtual machine scale set was restarted, causing 15 minutes of reduced availability for our service. We would like assistance…

Azure Virtual Machine Scale Sets
Azure Virtual Machine Scale Sets

Azure compute resources that are used to create and manage groups of heterogeneous load-balanced virtual machines.

514 questions
asked 2026-04-28T18:03:00.5166667+00:00
Heather Kemp 0 Reputation points Microsoft Employee
answered 2026-04-30T07:36:00.9133333+00:00
Alex Burlachenko 24,145 Reputation points MVP Volunteer Moderator
1 answer

Is the Azure VMSS IaaSDiagnostics extension being deprecated?

I'm not able to find information to confirm if the Azure VMSS IaaSDiagnostics extension, which is used for the Application Insights Profiler, is being deprecated. Is it the same extension as the Azure Diagnostic extension which was deprecated on March…

Azure Virtual Machine Scale Sets
Azure Virtual Machine Scale Sets

Azure compute resources that are used to create and manage groups of heterogeneous load-balanced virtual machines.

514 questions
asked 2026-04-14T23:18:12.6566667+00:00
Anh Le 0 Reputation points
commented 2026-04-20T17:05:18.3933333+00:00
Himanshu Shekhar 6,790 Reputation points Microsoft External Staff Moderator
2 answers

I ma not able to delete application

Brief summary of the issue Resource Group 'centralindia-app-gateway-rg' is stuck in Deleting (deprovisioning) state. VMSS is stuck with: ProvisioningState/failed/NetworkingInternalOperationError I am unable to: - Delete VMSS - Create resources (409…

Azure Virtual Machine Scale Sets
Azure Virtual Machine Scale Sets

Azure compute resources that are used to create and manage groups of heterogeneous load-balanced virtual machines.

514 questions
asked 2026-04-12T17:33:17.3466667+00:00
Mesala Govinda 0 Reputation points
commented 2026-04-17T04:26:45.0833333+00:00
Hemalatha 14,700 Reputation points Microsoft External Staff Moderator
5 answers One of the answers was accepted by the question author.

Azure Temp Drive for General Storage

Can I use the temporary disk (the D: drive by default) to store data? Sourced from MSDN

Azure Virtual Machines
Azure Virtual Machines

An Azure service that is used to provision Windows and Linux virtual machines.

10,235 questions
Azure Virtual Machine Scale Sets
Azure Virtual Machine Scale Sets

Azure compute resources that are used to create and manage groups of heterogeneous load-balanced virtual machines.

514 questions
asked 2019-10-29T20:00:37.183+00:00
Micah McKittrick 962 Reputation points Microsoft Employee Moderator
commented 2026-04-06T15:42:59.5933333+00:00
Ilyas Farrakhov 0 Reputation points
1 answer One of the answers was accepted by the question author.

VMSS stuck in "0 to 1" state for hours, no allocation, no errors

Scaling a newly created VMSS from 0 to 1 instance. The VMSS stuck in "0 to 1" state for hours, no error. Checked the VM family is supported in the region. Checked family vCPU and Total vCPU quota ok.

Azure Virtual Machine Scale Sets
Azure Virtual Machine Scale Sets

Azure compute resources that are used to create and manage groups of heterogeneous load-balanced virtual machines.

514 questions
asked 2026-02-19T15:33:35.5066667+00:00
Vassily Lyutsarev (NON EA SC ALT) 20 Reputation points Microsoft Employee
accepted 2026-02-25T17:57:58.05+00:00
Vassily Lyutsarev (NON EA SC ALT) 20 Reputation points Microsoft Employee
3 answers

VM size is currently not available in your region for this subscription

Hi, I am using Azure free trial with 200 credits. I upgraded to pay as you go. Now I'm stuck on a part where I have to create a cloud management gateway. I logged in, choose my app, choose my certificate but then im getting an error "VM size is…

Azure Virtual Machine Scale Sets
Azure Virtual Machine Scale Sets

Azure compute resources that are used to create and manage groups of heterogeneous load-balanced virtual machines.

514 questions
asked 2026-02-28T17:44:16.6066667+00:00
Aizen Sousuke 0 Reputation points
commented 2026-03-09T04:45:33.31+00:00
Manish Deshpande 7,530 Reputation points Microsoft External Staff Moderator
2 answers

Excluding VM Application version from "latest" does not work.

If a VM scale set is configured to install a VM Application version "latest" then the version selected will always be the latest deployed (or highest version number), even if that version was marked to be excluded from "latest" and an…

Azure Virtual Machine Scale Sets
Azure Virtual Machine Scale Sets

Azure compute resources that are used to create and manage groups of heterogeneous load-balanced virtual machines.

514 questions
asked 2026-03-05T23:11:16.5666667+00:00
Ed Hanway 0 Reputation points
answered 2026-03-06T00:06:22.3033333+00:00
Hemalatha 14,700 Reputation points Microsoft External Staff Moderator
2 answers

Unhealthy scale set instance for scale set "FE"

Hi Team, All Scale set instance under VMSS "FE" are unhealthy, I have tried restarting scale set instance to see if it helps but it didn't what can be done here? Tenant is GME. It is in prod environment. Because of this, auto upgrade is…

Azure Virtual Machine Scale Sets
Azure Virtual Machine Scale Sets

Azure compute resources that are used to create and manage groups of heterogeneous load-balanced virtual machines.

514 questions
asked 2026-03-11T05:24:57.91+00:00
Harini Gopinath 0 Reputation points
commented 2026-03-24T07:46:34.1166667+00:00
Manish Deshpande 7,530 Reputation points Microsoft External Staff Moderator
2 answers

New node I create are missing AKSLinuxExtension

I can't scale up node pool. Scaling to 1 silently fails. VMSS is missing AKSLinuxExtension. All new nodes system created are missing this extension. VMSS never attaches to AKS

Azure Virtual Machine Scale Sets
Azure Virtual Machine Scale Sets

Azure compute resources that are used to create and manage groups of heterogeneous load-balanced virtual machines.

514 questions
asked 2026-03-13T19:35:03.45+00:00
Greg Toews 20 Reputation points
answered 2026-03-13T21:06:16.1433333+00:00
Hemalatha 14,700 Reputation points Microsoft External Staff Moderator
2 answers One of the answers was accepted by the question author.

vmss_KeyVaultForWindows extension in failed state - deployment failing.

VMSS KV extension is in failed state - and deployment is failing with the following error. Status: Failed Error: Code: VMExtensionProvisioningTimeout Message: Provisioning of VM extension vmss_KeyVaultForWindows has timed out. Extension provisioning…

Azure Virtual Machine Scale Sets
Azure Virtual Machine Scale Sets

Azure compute resources that are used to create and manage groups of heterogeneous load-balanced virtual machines.

514 questions
asked 2026-04-01T11:36:43.65+00:00
Asmita Yadav 40 Reputation points Microsoft Employee
accepted 2026-04-06T17:10:49.57+00:00
Asmita Yadav 40 Reputation points Microsoft Employee
2 answers One of the answers was accepted by the question author.

VM Scale Set hr-dev-web-vmss is stuck in a marked‑for‑deletion state

We are unable to complete deletion of resource group hr-dev-rg-xxejvp due to a Virtual Machine Scale Set (hr-dev-web-vmss) that is marked for deletion. The VMSS returns HTTP 409 – OperationNotAllowed for all update operations, which prevents us from…

Azure Virtual Machine Scale Sets
Azure Virtual Machine Scale Sets

Azure compute resources that are used to create and manage groups of heterogeneous load-balanced virtual machines.

514 questions
asked 2026-04-02T23:22:53.4066667+00:00
Jasmin leroux 40 Reputation points
commented 2026-04-10T11:54:24.6833333+00:00
Jasmin leroux 40 Reputation points