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What is Error W40KLO?


I'm currently evaluating Jira for my firm with a free plan, but I'm having issues today. 

Every time I try to access a project or, settings, or anything else for that matter, I'm met with the error in the subject line of my question (pic at the bottom). 

I've cleared my cookie cache and history generally, but no luck; does anyone have any ideas? 

Thanks in advance, 
Jira Cap.PNG

7 answers

1 accepted

1 vote
Answer accepted
Andy Heinzer Atlassian Team Mar 22, 2021

Hi all,

Sorry for the inconvenience.  There was a problem that affected some Jira Cloud sites that would generate that error.  We posted an update to the statuspage about it over in

At this time the problem has been resolved.


Screenshot 2021-03-22 at 12.27.22.png

I have the same issue

Thanks, glad it's not just me. :) 

Systems are down, I guess... I'm having the same problem and other posts are describing same behaviour.


But JIRA statuspage says it's operational...

No, that's unrelated.

What error are you actually getting?

Now it's showing another page again... (no more error: W40KLO)

problem JIRA.png

In my URL I see the following...


but 5 minutes before, I still had access to the same page. I'm the only admin, so no one could have changed security settings...

So I guess there's something going wrong with JIRA cloud.

Same issue here, but with standard plan

1 vote

I've asked Atlassian to look at it in Slack, they should know it's the same error for more than one site!

0 votes

It's an error reference to give to Atlassian support when you raise a support request with them.

Thanks for your reply. 

Unfortunately there's no one-to-one support for free plans (that I can see anyway, the support form directed me here, to the community). Was hoping someone had come across it before and could give detail to resolve if possible. 

Thanks again. 

Ah, sorry, we're a bit stuck then.

The problem is something that has happened on the back-end, inside the Jira system you are using, and the code given to you is generated by it, just to enable Atlassian to find it quickly in the logs and data.

But if you're on the free plan, there's not a lot we can do - we'd need back-end access to see the records of the problem, but we can't do that on Cloud.

Atlassian support do get told when this sort of error happens, so they will take a look, but I don't know what will happen beyond that, they may just silently fix it.

Nice one, thanks for your input. 

0 votes

I'm also getting this error. But I can use Confluence without any problem.

Status-Page now shows the Issue: Atlassian Status

In our case the issue is solved, Jira is up and running. But the time we had the issue, also only jira was affected, Confluence worked without any restrictions.

Like Bernardo Vieira likes this

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