---
name: containers-ts-addon-istio-webhooks
title: Troubleshooting managed istio add-on upgrade to version 1.12
description: Resolve issues upgrading managed istio components from version 1.11 to 1.12 in IBM Cloud including managed Istio upgrade including Istio version 1.12.
last-updated: 2026-08-12
---

> ## Documentation Index
> The table of contents for this documentation set is at https://cloud.ibm.com/docs/containers?format=markdown
> The index for all IBM Cloud docs is at: https://cloud.ibm.com/docs/llms.txt
> Use these files to discover more information as needed.

# Troubleshooting managed istio add-on upgrade to version 1.12
{: #ts-addon-istio-webhooks}
{: support}

Resolve issues upgrading managed istio components from version 1.11 to 1.12 in IBM Cloud including managed Istio upgrade including Istio version 1.12.
{: shortdesc}

[Virtual Private Cloud]{: tag-vpc} [Classic infrastructure]{: tag-classic-inf}

When you upgrade your managed Istio components from version 1.11 to version 1.12, the upgrade does not complete.
{: tsSymptoms}

When you [check the status](https://cloud.ibm.com/docs/containers?topic=containers-debug_addons&format=markdown) of the Istio add-on, the **HEALTH STATUS** remains set to `(1.11 --> 1.12)`.

```sh
Name    Version   Health State   Health Status   
istio   1.12      updating       (1.11 --> 1.12)   
```
{: screen}

Additionally, when you check the logs for the `addon-istio-operator` pod by running `kubectl logs -n ibm-operators -l name=managed-istio-operator`, you see the following error messages.

```sh
Error [IST0139] (MutatingWebhookConfiguration istio-sidecar-injector) Webhook overlaps with others: [istio-sidecar-injector/namespace.sidecar-injector.istio.io]. This might cause injection to occur twice.
Error [IST0139] (MutatingWebhookConfiguration istio-sidecar-injector) Webhook overlaps with others: [istio-sidecar-injector/sidecar-injector.istio.io]. This might cause injection to occur twice.
```
{: screen}

If the Istio add-on instance you are upgrading was provisioned at version 1.10 or earlier, there are webhook issues that must be resolved before you can upgrade to version 1.12.
{: tsCauses}

To resolve the webhook errors and continue the version upgrade, follow the instructions in step 4 of [Updating the minor version of the Istio add-on](https://cloud.ibm.com/docs/containers?topic=containers-istio-update&format=markdown#istio_minor).
{: tsResolve}

Wait for the upgrade to proceed. Then, [check the Istio health status](https://cloud.ibm.com/docs/containers?topic=containers-debug_addons&format=markdown) to verify that the add-on is functioning normally.

```sh
Name    Version   Health State   Health Status   
istio   1.12      normal         Addon Ready   
```
{: screen}