What causes "Todoist Not Syncing"?

Browser extension or ad blocker interfering with the web app VPN, firewall or security software blocking todoist.com Outdated Todoist app Devices logged into different accounts (often an email typo) Account at a plan limit (projects, tasks, filters) Mobile data disabled for Todoist Todoist service incident

How do I fix "Todoist Not Syncing"?

1. Run a manual sync: Web, Windows, macOS: click your avatar (top-left) and select Sync iOS: Browse > gear icon > Sync Android: Browse > gear icon > About > Sync 2. Read the sync warning: Look for a yellow triangle at the top of the app Click it to see the cause (for example a plan limit) and follow its instructions 3. Copy unsynced data before clearing anything: Do not clear browser cache, cookies or local data yet Copy any tasks or edits that haven't reached other devices Only then log out or clear local data 4. Rule out extensions and network blockers: Open a private/incognito window and log in at app.todoist.com If it syncs there, disable extensions one by one Temporarily turn off VPN/firewall or allowlist todoist.com On iOS/Android, enable mobile data for Todoist in system settings 5. Confirm every device uses the same account: Web/desktop: click your avatar and check the email above Settings Mobile: gear icon > Account Compare addresses carefully for typos 6. Update the app and check plan limits: Install the latest Todoist on every device Check you're under your plan's project, task (300 per project) and filter limits 7. Run a two-way sync test, then contact support: Create a test task on the web app and check it on the other device Create a second test task on that device and check the web app Send support the app versions, test task links and screenshots of errors

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Todoist Not Syncing

Workaround available Web, Windows, macOS, iOS, Android Updated October 21, 2026

Quick answer

Todoist usually stops syncing because of a browser extension, VPN/firewall, outdated app, plan limit or a second device signed into a different account. Run a manual sync, read the yellow warning triangle, and don't clear local data until unsynced changes are copied.

Most likely fix: Run a manual sync.

Symptoms

Tasks added on one device don't show on another, completed tasks come back, a yellow warning triangle appears at the top of the app, or changes revert after reload.

Why it happens

Browser extension or ad blocker interfering with the web app
VPN, firewall or security software blocking todoist.com
Outdated Todoist app
Devices logged into different accounts (often an email typo)
Account at a plan limit (projects, tasks, filters)
Mobile data disabled for Todoist
Todoist service incident

How to fix it

Try these in order — the most common fix is first.

1. Run a manual sync
1. Web, Windows, macOS: click your avatar (top-left) and select Sync
2. iOS: Browse > gear icon > Sync
3. Android: Browse > gear icon > About > Sync
2. Read the sync warning
1. Look for a yellow triangle at the top of the app
2. Click it to see the cause (for example a plan limit) and follow its instructions
3. Copy unsynced data before clearing anything
1. Do not clear browser cache, cookies or local data yet
2. Copy any tasks or edits that haven't reached other devices
3. Only then log out or clear local data
4. Rule out extensions and network blockers
1. Open a private/incognito window and log in at app.todoist.com
2. If it syncs there, disable extensions one by one
3. Temporarily turn off VPN/firewall or allowlist todoist.com
4. On iOS/Android, enable mobile data for Todoist in system settings
5. Confirm every device uses the same account
1. Web/desktop: click your avatar and check the email above Settings
2. Mobile: gear icon > Account
3. Compare addresses carefully for typos
6. Update the app and check plan limits
1. Install the latest Todoist on every device
2. Check you're under your plan's project, task (300 per project) and filter limits
7. Run a two-way sync test, then contact support
1. Create a test task on the web app and check it on the other device
2. Create a second test task on that device and check the web app
3. Send support the app versions, test task links and screenshots of errors

This guide also covers

todoist not syncing
todoist sync error
todoist not syncing between devices
todoist sync not working
todoist yellow triangle

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