Trello Not Working? Common Errors & Fixes

Usually either a Trello-side incident (check the status page and community first) or a browser/cache/network problem on your side. A hard refresh or a private window fixes most local cases.

Most Power-Up failures are fixed by removing and re-adding the Power-Up and then refreshing the page; third-party Power-Ups must be fixed by their vendor, not Trello.

Free Workspaces can only have 10 open boards at a time. Close boards you don't need, create a second Workspace, or upgrade to Standard for unlimited boards.

Free Workspaces are limited to 10 collaborators (members, guests and pending invites). Over the limit, boards become view-only until an admin removes collaborators or upgrades.

Trello only notifies you about cards you're a member of or watching, and sends email digests periodically by default. Send a test email and switch email frequency to Instant.

You can't: Atlassian says the new Trello view has no opt-out or switch back. You can hide Inbox and Planner and pin the board switcher as a sidebar to get closer to the old layout.

Most often the Workspace has used up its monthly automation quota (250 runs on Free, 1,000 on Standard), which is shared across all boards. Check Workspace activity in the automation log.

Trello loads all open cards and attachments when a board opens, so big boards get slow. Atlassian recommends fewer than 1,000 open cards per board (under 500 with heavy attachments or checklists).

On iOS, changes can get stuck in the app's sync queue. Check Account > Sync Queue for stuck items, update the app, and only reinstall after confirming nothing is waiting to upload.

On the free plan files over 10MB can't be uploaded; paid plans allow 250MB per file. Large uploads can also time out, so compress files or link them from cloud storage.

The Calendar Power-Up iCal feed is pulled by Google Calendar, which refreshes subscribed calendars roughly once a day. Delays are expected; regenerate the feed link if it never updates.

Since the redesign, comments live in a separate Comments and Activity panel opened from a button on the card. If comments vanished for everyone, it's usually a Trello incident (e.g. May 2026).

Trello logins go through Atlassian accounts; most loops are caused by stale cookies or the browser picking the wrong account. Clear trello.com and atlassian.com data or use a private window.