500 questions with Azure Virtual Machine Scale Sets tags

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2 answers

Azure VM Deployment Fails with “Allocation Failed” Error in Selected Region

I’m trying to deploy a Virtual Machine in Microsoft Azure, but the deployment keeps failing with an “Allocation Failed” error. The VM is being created through the Azure Portal using a standard image and size. Details: Region: East US VM Size:…

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.

500 questions
asked 2026-03-12T23:04:49.7733333+00:00
Abhinava Maddha 20 Reputation points Microsoft Employee
edited an answer 2026-03-12T23:33:55.4366667+00:00
TP 152.1K Reputation points Volunteer Moderator
0 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.

500 questions
asked 2026-03-05T23:11:16.5666667+00:00
Ed Hanway 0 Reputation points
commented 2026-03-11T07:32:17.53+00:00
Nikhil Duserla 9,685 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.

500 questions
asked 2026-03-11T05:24:57.91+00:00
Harini Gopinath 0 Reputation points
answered 2026-03-11T06:30:23.5366667+00:00
Manish Deshpande 4,450 Reputation points Microsoft External Staff Moderator
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.

500 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 4,450 Reputation points Microsoft External Staff Moderator
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.

500 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
1 answer

Unexpected outage during AKS update window

During our scheduled update window, we experience regular but brief outages with our web application running on AKS. When we've looked into the Change Analysis section of Azure, we notice that VMSS and Disk upgrades are happening around the time of the…

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.

500 questions
asked 2026-02-13T21:55:22.42+00:00
Dean Ferley 45 Reputation points
edited an answer 2026-02-20T17:17:42.1833333+00:00
Himanshu Shekhar 4,025 Reputation points Microsoft External Staff Moderator
1 answer One of the answers was accepted by the question author.

VMSS still failing after Feb 2 incident — VMSS control‑plane operations broken, only instance APIs work

I have a Virtual Machine Scale Set running in East US 2 that was impacted by the Feb 2 service‑management outage. During the outage, the VMSS failed to download extensions from Microsoft‑managed storage. Autoscaling attempted to scale out, and I manually…

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.

500 questions
asked 2026-02-03T19:48:22.6166667+00:00
Mike Jones 20 Reputation points Microsoft Employee
edited a comment 2026-02-19T13:29:11.9266667+00:00
Jilakara Hemalatha 10,365 Reputation points Microsoft External Staff Moderator
1 answer

Half the instances in the VMMS are failing because they can not access the filesystem

As the title says, I have a workload that spawns 200 VMs using a VMSS to concurrently process the same set of files stored in a Storage Account, mounted using NFS. Exactly half of them (100) fail because the can not find the files. This happens ver…

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.

500 questions
asked 2026-02-10T16:07:07.2033333+00:00
Anibal Rivero 0 Reputation points
edited an answer 2026-02-17T21:38:38.78+00:00
Himanshu Shekhar 4,025 Reputation points Microsoft External Staff Moderator
1 answer

Azure Image builder failure when preparing an image update for my VMSS

Hi, I have created VMSS to run and scale my Windows services application. Now I'm trying to automate the process of rolling updates for the application using the Azure Image Builder. A did all prerequisites steps - settings permissions, etc. registering…

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.

500 questions
asked 2026-02-11T13:22:06.48+00:00
Martin Madanski 0 Reputation points
commented 2026-02-17T18:08:01.16+00:00
Jilakara Hemalatha 10,365 Reputation points Microsoft External Staff Moderator
1 answer

How should DCR association work with VMSS Flexible that only supports User-Assigned MI

Data Collection Rule (DCR) association with Virtual Machine Scale Set (VMSS) in Flexible orchestration mode fails due to two distinct issues related to Managed Identity handling and Private Link configuration. Issue 1: DCR forces System-Assigned Managed…

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.

500 questions
asked 2026-01-29T08:36:24.6966667+00:00
PLADASLO 0 Reputation points
edited an answer 2026-02-05T01:02:21.35+00:00
Himanshu Shekhar 4,025 Reputation points Microsoft External Staff Moderator
1 answer

Azure → Virtual Machine Scale Sets

Hello Microsoft Community Team, I am currently running multiple applications on Azure Virtual Machine Scale Sets (VMSS) and would like guidance on industry best practices for managing deployments. Current Setup I have 12 different projects running on a…

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.

500 questions
asked 2026-01-22T08:04:47.0333333+00:00
Subhash Chand 0 Reputation points
commented 2026-01-29T01:15:27.84+00:00
Himanshu Shekhar 4,025 Reputation points Microsoft External Staff Moderator
0 answers

How to fix "Provisioning of VM extension vmssCSE has timed out"

While scaling up. I get the following error. The exact same setup has worked for months, but suddenly fails with this error. What can I do? Provisioning of VM extension vmssCSE has timed out. Extension provisioning has taken too long to complete. The…

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.

500 questions
asked 2026-01-05T11:32:06.8733333+00:00
Bob 0 Reputation points
edited a comment 2026-01-23T13:04:12.5366667+00:00
Manish Deshpande 4,450 Reputation points Microsoft External Staff Moderator
1 answer One of the answers was accepted by the question author.

Unable to RDP into VMSS instances after changing the image reference.

Symptoms: Remote Desktop connection fails to all VMSS instances Error: "Remote Desktop can't connect to the remote computer" (remote access not enabled / computer turned off / not available on network) Environment: Azure Virtual Machine…

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.

500 questions
asked 2026-01-20T20:10:32.4666667+00:00
Mayoor Shardha 20 Reputation points Microsoft Employee
accepted 2026-01-22T18:38:03.0266667+00:00
Mayoor Shardha 20 Reputation points Microsoft Employee
1 answer

Unable access OS disk of Virtual Machines Scale Set

I received error when I tried to access the personal data OS disk of my VMSS. "The access token is from the wrong issuer <personal data>. It must match the tenant <personal data>associated with this subscription. Please use the…

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.

500 questions
asked 2025-12-31T02:54:20.9366667+00:00
Tan Boon Huan 20 Reputation points
commented 2026-01-21T10:53:00.4366667+00:00
Manish Deshpande 4,450 Reputation points Microsoft External Staff Moderator
1 answer One of the answers was accepted by the question author.

Automatic OS Upgrade operations are not supported for this subscription

az vmss update --name <vmss-name> --resource-group <rg> --enable-auto-os-upgrade true --upgrade-policy-mode Automatic (OperationNotAllowed) Automatic OS Upgrade operations are not supported for this subscription. Please register the…

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.

500 questions
asked 2026-01-07T00:07:24.7233333+00:00
Nitin Jamadagni Madapura Rajashekhar 20 Reputation points Microsoft Employee
accepted 2026-01-07T23:03:17.13+00:00
Nitin Jamadagni Madapura Rajashekhar 20 Reputation points Microsoft Employee
3 answers One of the answers was accepted by the question author.

Unable to create VMSS

As per my development need Iam trying to create Azure Virtual machine scale sets in Centra India, E2a v4 but iam getting an error "Your subscription doesn't support virtual machine creation in South India. Choose a different location."

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.

500 questions
asked 2026-01-02T06:03:42.9766667+00:00
System Administration 20 Reputation points
answered 2026-01-07T11:41:49.1133333+00:00
System Administration 20 Reputation points
1 answer One of the answers was accepted by the question author.

My Virtual Machine won't start due to an AKV access error even though the AKV is configured for VM deployment

When I try to start my VM instance I get this error: Key Vault <secret PII info removed> either has not been enabled for deployment or the vault id provided, <AKV resource id removed>, does not match the Key Vault's true resource…

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.

500 questions
asked 2026-01-06T15:43:05.4933333+00:00
David Shiflet 20 Reputation points Microsoft Employee
commented 2026-01-06T20:37:15.2266667+00:00
David Shiflet 20 Reputation points Microsoft Employee
3 answers

vmss deleted associated vm

I attached a vmss to a vm and then this process deleted the vm it is attached to. Now our application and databsae on the vm is lost. We need to recover it.

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.

500 questions
asked 2025-11-19T15:22:52.63+00:00
Kiran Pande 0 Reputation points
edited a comment 2026-01-05T17:04:16.1133333+00:00
Manish Deshpande 4,450 Reputation points Microsoft External Staff Moderator
1 answer

VMSS upgrade failed.

プロビジョニング失敗ErrorProvisioningState/failed/UpdateDomainWalkTimeout Virtual Machine Scale Set update timed out after 07:40:00, waiting for service fabric approval. 2025年12月18日木曜日 18:57:23 The Azure VMSS upgrade failed. The error message is shown above.…

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.

500 questions
asked 2025-12-19T00:47:32.2+00:00
偉球 董 20 Reputation points
edited an answer 2025-12-30T05:42:44.3+00:00
Manish Deshpande 4,450 Reputation points Microsoft External Staff Moderator
3 answers

PROD VM Scale set experiencing degraded performance due to unplanned event

Hello Team, We experienced degraded performance in two of our VM Scale Sets in production. All the VMs within the scale sets were affected simultaneously within a few minutes. This issue impacted our application and, consequently, our customers. We would…

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.

500 questions
asked 2025-12-15T05:12:21.09+00:00
Ponnusamy, Vijaykumar 20 Reputation points
commented 2025-12-19T08:58:23.14+00:00
Manish Deshpande 4,450 Reputation points Microsoft External Staff Moderator