# Issue with Sending Test Messages in OpenSearch Alerting

**URL:** <https://forum.opensearch.org/t/issue-with-sending-test-messages-in-opensearch-alerting/28170>\
**Category:** Alerting\
**Created:** [June 29, 2026, 3:39pm UTC](https://forum.opensearch.org/t/issue-with-sending-test-messages-in-opensearch-alerting/28170 "2026-06-29T15:39:43Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Douaa\_MIKOU](https://avatars.discourse-cdn.com/v4/letter/d/90db22/32.png) [@Douaa\_MIKOU](https://forum.opensearch.org/u/Douaa_MIKOU)\
**Post date:** [June 29, 2026, 3:39pm UTC](https://forum.opensearch.org/t/issue-with-sending-test-messages-in-opensearch-alerting/28170/1 "2026-06-29T15:39:43Z")

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**Versions** (relevant - OpenSearch/Dashboard/Server OS/Browser):

**Describe the issue** : I’m encountering an issue while trying to send a test message from OpenSearch to a Microsoft Teams channel. I have set up an alerting notification action, but I keep receiving the following error:

 ![image](https://us1.discourse-cdn.com/flex019/uploads/mauve_hedgehog/original/2X/7/7a047e2d1abdcf37d778d33c1116c31f3c7dea12.png)

**Configuration** :

**Relevant Logs or Screenshots** :

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**Author:** ![Anthony](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.opensearch.org/anthony/32/9939_2.png) [@Anthony](https://forum.opensearch.org/u/Anthony)\
**Post date:** [June 30, 2026, 12:04pm UTC](https://forum.opensearch.org/t/issue-with-sending-test-messages-in-opensearch-alerting/28170/2 "2026-06-30T12:04:26Z")

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@Douaa_MIKOU Welcome to the forum.

After going through the code, I can see that this error usually means that the notification channel is muted or disabled. Can you navigate to **Notifications → Channels** and verify that it isn’t. If that is not the case, can you outline clearly the steps to reproduce this error.

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**Author:** ![system](https://us1.discourse-cdn.com/flex019/uploads/mauve_hedgehog/original/2X/3/33547ea01a5b12dcca2958411d3edd97ae2ea8c1.png) [@system](https://forum.opensearch.org/u/system)\
**Post date:** [August 29, 2026, 12:05pm UTC](https://forum.opensearch.org/t/issue-with-sending-test-messages-in-opensearch-alerting/28170/3 "2026-08-29T12:05:13Z")

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