---
slug: "azure-load-balancer-numberofprobes-property-end-of-support"
title: "Azure Load Balancer: numberOfProbes property end of support"
summary: "End of support date for the Azure Load Balancer numberOfProbes property: 1 Sep 2027. Microsoft does not support the property after that date and names the probeThreshold property as the one to use."
cloud: "azure"
service: "Azure Load Balancer"
service_slug: "load-balancer"
category: "feature"
type: "end_of_support"
announced_date: "2024-10-10"
effective_date: "2027-09-01"
effective_precision: "day"
replacement: "probeThreshold property"
affected_versions: []
source_url: "https://azure.microsoft.com/updates?id=end-of-support-announcement-for-azure-load-balancer-numberofprobes-property-on-1-september-2027"
extra_source_urls: ["https://aka.ms/VersionHowTo"]
vendor_ref: "end-of-support-announcement-for-azure-load-balancer-numberofprobes-property-on-1-september-2027"
last_checked_at: "2026-11-12T09:55:19.345Z"
created_at: "2026-11-13T13:36:44.208Z"
updated_at: "2026-11-13T13:36:44.208Z"
url: "https://eolwatch.dev/items/azure-load-balancer-numberofprobes-property-end-of-support"
short_url: "https://eolwatch.dev/i/7k"
markdown_url: "https://eolwatch.dev/items/azure-load-balancer-numberofprobes-property-end-of-support.md"
json_url: "https://eolwatch.dev/items/azure-load-balancer-numberofprobes-property-end-of-support.json"
---

# Azure Load Balancer: numberOfProbes property end of support

End of support date for the Azure Load Balancer numberOfProbes property: 1 Sep 2027. Microsoft does not support the property after that date and names the probeThreshold property as the one to use.

- Effective date: 1 Sep 2027
- Cloud: [Azure](https://eolwatch.dev/cloud/azure.md)
- Service: [Azure Load Balancer](https://eolwatch.dev/services/azure/load-balancer.md)
- Type: End of support
- Category: [Feature](https://eolwatch.dev/categories/features.md)
- Replacement: probeThreshold property
- Announced: 10 Oct 2024
- Official source: [azure.microsoft.com](https://azure.microsoft.com/updates?id=end-of-support-announcement-for-azure-load-balancer-numberofprobes-property-on-1-september-2027)
- Last checked: 12 Nov 2026

## What breaks

Support for the Azure Load Balancer numberOfProbes property ends on 1 Sep 2027. Microsoft does not support the property after that date. To avoid service disruption, Microsoft advises upgrading apps to API version 2022-05-01 or higher and using the Azure Load Balancer probeThreshold property.

## Who is affected

### Matching resource types

- `microsoft.network/loadbalancers`

### Fields the check reads

- `properties.probes.properties.numberofprobes`

### Detected by the estate check from

- ARM template

## What to do

1. Upgrade your apps to API version 2022-05-01 or higher. Microsoft links guidance on [updating your API](https://aka.ms/VersionHowTo).
2. Before 1 Sep 2027, stop using the numberOfProbes property, migrate to the probeThreshold property, or both.

## Replacement

probeThreshold property

## Sources

- [Official source](https://azure.microsoft.com/updates?id=end-of-support-announcement-for-azure-load-balancer-numberofprobes-property-on-1-september-2027) (azure.microsoft.com, Official)
- [Additional source](https://aka.ms/VersionHowTo) (aka.ms, Official)

Last checked against the first source in this list on 12 Nov 2026.

Page: https://eolwatch.dev/items/azure-load-balancer-numberofprobes-property-end-of-support | JSON: https://eolwatch.dev/items/azure-load-balancer-numberofprobes-property-end-of-support.json

The text on this page is drafted with AI assistance from the vendor's text, checked against the official source and approved by a person before it is published.