# Upgrade to 8.4.0 fails when snoozed alerting rules are defined \[Known issue\]

**URL:** <https://discuss.elastic.co/t/upgrade-to-8-4-0-fails-when-snoozed-alerting-rules-are-defined-known-issue/312875>\
**Category:** Announcements\
**Created:** [August 25, 2022, 7:19am UTC](https://discuss.elastic.co/t/upgrade-to-8-4-0-fails-when-snoozed-alerting-rules-are-defined-known-issue/312875 "2022-08-25T07:19:16Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![Shani\_Sagiv](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/shani_sagiv/32/107936_2.png) [@Shani\_Sagiv](https://discuss.elastic.co/u/Shani_Sagiv)\
**Post date:** [August 25, 2022, 7:19am UTC](https://discuss.elastic.co/t/upgrade-to-8-4-0-fails-when-snoozed-alerting-rules-are-defined-known-issue/312875/1 "2022-08-25T07:19:16Z")

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Users that use Elastic 8.3.x and contain a currently snoozed rule, will fail to upgrade to 8.4 due to a known issue with saved object migration. This does not apply to indefinite snooze or mute, only to an on-demand snooze i.e. snooze for 1 hour.

Please do not upgrade Kibana from 8.3.x to 8.4 if you have any alerting rules with a snooze notification configured. You can identify snoozed rules in **Stack Management / Rules and Connectors**. Select to filter the rule list using the **View** menu option and select **Snoozed**. Cancel the snooze for all affected rules before upgrading. This must be done for each Space.  
To identify snoozed rules in all Spaces using **Dev Tools** , run the following query:

```auto
GET /.kibana/_search
{
  "query": {
    "exists": {
      "field": "alert.isSnoozedUntil"
    }
  }
}

```

If you attempt to upgrade Kibana from 8.3 to 8.4 with snoozed rules you will receive the following error message.

```auto
FATAL Error: Unable to complete saved object migrations for the [.kibana] index.

```

You must restore your previous version and cancel any snoozed rules before retrying the upgrade.

A fix (8.4.1) will be released in the upcoming days.

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [September 22, 2022, 8:03am UTC](https://discuss.elastic.co/t/upgrade-to-8-4-0-fails-when-snoozed-alerting-rules-are-defined-known-issue/312875/4 "2022-09-22T08:03:31Z")

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