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Cannot log into Trello desktop app on macOS, and no responses from Atlassian support

Adil Ghanty
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December 6, 2025

I am unable to login to the macOS Trello desktop app. I can login through browser, and the iOS app remains logged in. Atlassian seem unwilling to acknowledge the issue, respond to others experiencing the same issue, or offer a direct link to getting support from a human.

2 answers

0 votes
Gaurav Kataria
Atlassian Team
Atlassian Team members are employees working across the company in a wide variety of roles.
December 7, 2025

MacOS app uses the default browser for initial login, which requires third party cookies (Trello/Atlassian). Please make sure your default browser (Safari/Chrome, etc.) allows 3rd party cookies.

Adil Ghanty
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December 7, 2025

@Gaurav Kataria thank you for the response.

Please could you provide some steps on how to do this in Safari?

The attached screenshot is what I see in Safari upon attempting to log in - as you can see, there is no cookie acceptance dialogue. If I have previously disabled this for Trello / Atlassian auth sites, is there a way to manually enable this again?

Cheers,
Adil

Adil Ghanty
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!
December 7, 2025

Reattaching, as the first failed!

Adil Ghanty
I'm New Here
I'm New Here
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December 7, 2025

Edit: clearly this site doesn't want to accept attachments in Safari, and I'm not prepared to switch browsers to upload a file. Hopefully you're familiar with the failed login screen. Please let me know if not, and I'll find another way to get it to you.

0 votes
Rock
December 6, 2025

Try these steps to fix the Trello macOS login issue:

  1. Clear cache: ~/Library/Application Support/Trello
  2. Reinstall the app from Trello
  3. Check macOS Security & Privacy settings for app permissions

if it still fails, use Trello in browser for ow.

Adil Ghanty
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!
December 7, 2025

Hey @Rock, thanks for the response. No joy unfortunately. Browser it is for the time being. In the interim, it would be nice if Atlassian were to acknowledge the issue, and offer a workaround or timeline for a fix.

Cheers! 

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