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

Adil Ghanty
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
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
December 7, 2025

Reattaching, as the first failed!

Adil Ghanty
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
Contributor
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
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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