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Slack receiving duplicate notifications


Hey all, 

I'm having notifications from our slack integration across the board created a duplicate notification when an issue is created. 

Here are some of the troubleshooting steps already taken from my side.

  1. I've looked through the slack integration applications>slack and verified that there are not duplicate entries for the slack channels. 
  2. I've tested that the same issue is occurring in our production and test environment, both are creating duplicate notifications. 
  3. I've turned off the notification and tested if an alert fired. After it was turned off no notifications were created. My thought behind this is that if one did fire after turning off there was either a scriptrunner or post function firing the alert. 
  4. I've disable and then re-enabled the slack notification app all together.
  5. I've deleted and rebuilt the notification setup. 

2022-10-13 15_34_51-Slack integration - JIRA at EDCO.png

as far as I can there there have been no changes to the app via upgrade or upgrades on slack either. Any and all help is appreciated. 

Jira Server for Slack (Official)

Version: 3.0.1
Vendor: Atlassian
Support: Supported by Atlassian
App key: com.atlassian.jira.plugins.jira-slack-server-integration-plugin

14 answers

1 accepted

Filipi Lima
Atlassian Team
Atlassian Team members are employees working across the company in a wide variety of roles.
Oct 17, 2022

Hey, folks!

We determined that this was caused by an unannounced change in Slack's REST API response which was not being handled gracefully by the plugin.

To help with this, we released a new version of the Slack for Jira (Official)!

While version 3.0.2 is not yet a permanent fix, it will prevent the duplicate messages from happening.

  • This should prevent the duplicate messages but some failures will still be displayed in the logs until we get a permanent fix delivered.

Atlassian Marketplace - Jira Server for Slack (Official) 

Just like its previous version 3.0.1, it is only compatible with Jira version 8.9.1 and newer.

We'll keep adding any future updates on the ticket @Tim Howard kindly provided earlier:



Jira Server for Slack (Official) v3.0.2 resolves problem

Like Filipi Lima likes this

Thanks Filipi, Issue fixed after upgrading to 3.0.2.

Like Filipi Lima likes this

Will there be a fix for JIRA Server 8.8 ? This v3.0.2 seemed to be only for JIRA 8.9 up

Upgraded to v3.0.2 this morning which fixed this but 3 hours later... it's happening again, any advice please?

Saravanakumar Balakrishnan
I'm New Here
I'm New Here
Those new to the Atlassian Community have posted less than three times. Give them a warm welcome!
Mar 16, 2023

Hi @Filipi Lima 

I am using slack 4.29 version with jira cloud. but still am receiving duplicate notifications for every changes. it filling my channel threads... 

I just got an answer to my support ticket with Atlassian.  This appears to be a bug as Slack updated their API and the Slack for Jira app doesn't handle the response.


Thanks for opening the JRASERVER bug!

Here's the response I received from my support request:

We have been receiving dozen of cases regarding this issue since last Friday and an outage alert has been put in place as we gather all possible information from the specific cases and affected version while development and engineering investigate.

We will keep you informed as the information becomes available.

Looks like they're on it :) 


Started October 13th, 2022 after 5pm EST.

Same here +1

same here.

If you're having the Duplicate Jira Server Messages in Slack problem and can open a Support Request for Jira Server with Atlassian, I encourage you to open a support request! 

That will be the best way to get visibility to this problem in order to get it fixed. 

Same. Started Oct. 11 CDT

JIRA Data Center v8.22.1 and Slack Production 4.28.184 64-bit

We are also seeing duplicate announcements, but only on new integrations defined this week. Integrations that were defined prior to this week are all working as expected.  We are on an older version of the plugin - 2.0.21.  We believe it is a problem on the Slack side, not the Jira side, and have reported it to our partners at Slack.  No response from Slack yet.

Slack responded that we need to report the problem to Atlassian since they are the creator of the integration.  Atlassian will need to work directly with Slack to determine if there is a problem with the integration.  I suggest that everyone on this thread submit a support ticket to Atlassian, citing this conversation.

I submitted a support ticket to Atlassian.

Fixed with 3.0.2 patch.

Also having this issue across all projects that use slack.  

In the same boat.

Happening here also.

Also have the same issue 

<delete please>

0 votes
Florian Bonniec
Community Leader
Community Leader
Community Leaders are connectors, ambassadors, and mentors. On the online community, they serve as thought leaders, product experts, and moderators.
Oct 13, 2022

Hi @Vivo Bandito 


So when an issue is created, 2 identical notifications are send to the same Slack Channel right ?

What are you using to send slack from JIRA ?




same issue as @Vivo Bandito -- started happening today.

On my setup, 2 out of 11 Jira projects are exhibiting such behaviour.

Like # people like this

Same issue, started on the 13th. No changes to config or apps. When I re-added the notification I even got a duplicate message: "<user> 

set Jira notifications from project <project> to appear in this channel."

We're using Atlassian's Slack plugin for Jira Server

Version: 3.0.1
Vendor:  Atlassian
Support: Supported by Atlassian
App key: com.atlassian.jira.plugins.jira-slack-server-integration-plugin
Like Vivo Bandito likes this
Florian Bonniec
Community Leader
Community Leader
Community Leaders are connectors, ambassadors, and mentors. On the online community, they serve as thought leaders, product experts, and moderators.
Oct 13, 2022

I've not review it yet but if you are 3 having the issue starting today without having updated anything I would check on Slack side 😅

Like Ravi likes this

We are also having the same issue, I deleted and rebuilt some of our notifications but this did nothing.

Also having the same issue 

We have encountered the same issue using the latest version Jira Server for Slack version 3.0.1. I noticed this behavior a few months ago but it happens randomly, but last Oct 12, 2022 it happens to all subscription.

One thread was updated who encountered the same issue Duplicate messages on Slack when creating tickets.

Like Barbara Śliwa likes this

We are also having the same issue

Florian Bonniec
Community Leader
Community Leader
Community Leaders are connectors, ambassadors, and mentors. On the online community, they serve as thought leaders, product experts, and moderators.
Oct 14, 2022

Base on the number of impacted user and the fact that the app did not had any update on JIRA side for a while I would reach out to Slack for this issue.

I'm not familiar with this app but do you have a way to get the webhook that is call on Slack side and try to send something from the command line to see if there is the issue ? If so we can definetly remove JIRA from the equation. 

Hey @Florian Bonniec

It's not a Slack problem. It's the Jira Server App - - which is an Official, supported Atlassian Slack Application.

I've just now opened a support request with Atlassian and uploaded a Support Zip so that should get the ball rolling internally if no one else has done that yet.

I spent a few hours today parsing through the logs - it's crystal clear that the Jira Server for Slack Plugin - - is sending one (and exactly one) Slack message to the Slack App API endpoint, which then results in two (exactly two) messages for each and every event.

This is quite plainly out of the hands of the users, as we do not (and cannot) have any control over the Slack App (which is entirely owned and managed by Atlassian). 

Like # people like this

Jira Server for Slack (Official) v3.0.2 resolves this problem (released 17.10.2022)

How is this even possible... and how can it be "fixed" by a patch which didn't broke it in the first place!?

We haven't changed anything on the Jira server, nor the plugins in the last few weeks and suddenly we are experiencing this issue as well.

Unfortunately we are currently still at a pre- Jira Server V8.9.1 version of Jira Core (long story don't want to go into), meaning we run slack app V2.0.23 and can't "fix" this, because there is no "fix" in the previous slack plugins?!

I'd like to better understand the cause of the issue and know if there are workarounds?

Filipi Lima
Atlassian Team
Atlassian Team members are employees working across the company in a wide variety of roles.
Oct 18, 2022

Hi, @Hylke,

I'm sorry to hear you're unable to upgrade into a Supported version.

The event that we believe triggered this problem is not on your instance or due to any change under your control.

Apparently sometime last week, the response our plugin gets from Slack changed slightly in format in a way that our plugin could not handle it gracefully, leading to a retry and the duplicate message.

It started sending a "rich_text" element within "blocks" which was not expected.

At this time, we do not have plans to create a fix for an older and unsupported version - Jira 8.9.x itself reached End of Life on May 2022.

Like # people like this

@Filipi Lima   We are seeing this same issue, but are running version 3.0.3.  Is it possible it is not actually fixed?

Filipi Lima
Atlassian Team
Atlassian Team members are employees working across the company in a wide variety of roles.
Oct 25, 2022

Hi, Chad, version 3.0.3 has the permanent fix for the duplicate messages caused by the unexpected elements coming from Slack's response.

I recommend checking if you have multiple subscriptions for the same event and also try a test on a dedicated channel for a test issue/project.

If it remains unclear, you may open a ticket on so we can check it in more details.


Filipi Lima

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