Loop task list not syncing correctly

I wonder if Microsoft staff are embarrassed about situations like this. Microsoft provides Planner as a task management system; they advertise it and how Loop documents integrate with it. They get people signed up to use it based on their claims, leveraging the good faith users have that the software is tested and that Microsoft cares about the quality of what it charges for. The advertising shows that when you mark a Loop task complete in the “My Tasks” view, it will show as complete in the Task section of the Loop status report created for that workspace. Great - built in status summary; looks cool. The problem is, however, it doesn’t work. Tasks don't synchronize. OK—no problem, bugs happen, so the good-faith assumption is that when a bug is reported, Microsoft will act on it. A year later—nothing, no fix, no explanation - just more subscription fees. Is anyone at Microsoft embarrassed about how little the company cares about quality, or about how incredibly much time it wastes for hundreds of thousands of end users who commit to their solutions only to find that the basic claims of the software’s functionality are false?

Here is Microsoft's Copilot's assessment of this bug:

✅ Evidence this is a known, multi‑tenant problem

1. Microsoft Q&A threads (Loop + Planner + To Do)

Multiple Microsoft Learn Q&A threads document stale or one‑way sync between Loop task lists and Planner/To Do, including tasks remaining open long after completion:

• “Loop task list not syncing correctly” (Dec 29, 2025) – users report inconsistent status across Loop, Planner, and To Do, with no effect from manual sync attempts [learn.microsoft.com]
• “Loop tasks do not synchronize with Planner” – several users explicitly state “this appears to be a problem faced by many users” with no resolution months later [learn.microsoft.com]
• “Loop Tasks do no more synchronise with Microsoft To Do” – confirms breakage after tasks were previously working, suggesting backend or schema issues rather than user error [learn.microsoft.com]

These threads are important because they match your symptoms exactly:

• Tasks completed days or weeks ago
• Planner/To Do lagging or frozen
• Manual sync ineffective

2. Microsoft staff responses acknowledge backend limitations

In the Dec 2025 Q&A thread, a Microsoft moderator explicitly states:

• Sync works in their test tenant
• But recommends recreating the task list directly in the Loop app and escalating to Microsoft Support if it fails [learn.microsoft.com]

This pattern (works in clean tenants, fails in real ones) is consistent with plan corruption or stuck Dataverse links, not user behavior.

3. Community + Reddit confirmation (one‑way and stale sync)

Reddit and community posts confirm:

• Sync is often one‑way
• Planner changes do not reliably flow back to Loop
• Loop Status views can show outdated task state indefinitely [reddit.com]

What’s actually going wrong (based on evidence)

The task list was not originally created in the Loop app

  - Task lists embedded from OneNote, Teams chats, or copied between workspaces are especially prone to sync failure [[learn.microsoft.com]](https://learn.microsoft.com/en-us/answers/questions/5685552/loop-task-list-not-syncing-correctly)
  

The underlying Planner plan is partially corrupted

• Microsoft Support explicitly mentions this possibility and asks for network logs in similar cases (including yours, historically) [RE: [EXTER...0010002261 | Outlook]

Loop Status view is reading stale Planner state

  - Status view aggregates from Planner/Tasks service, not the local Loop document
  
     - If Planner never received (or acknowledged) the completion update, Status will stay “Open” indefinitely
     

1. Manual “Sync now” does not force reconciliation
   • There is no evidence in Microsoft documentation that “Sync now” performs a deep re‑sync; it appears to be a lightweight refresh, not a repair

     ✅ Evidence this is a known, multi‑tenant problem

     1. Microsoft Q&A threads (Loop + Planner + To Do)

     Multiple Microsoft Learn Q&A threads document stale or one‑way sync between Loop task lists and Planner/To Do, including tasks remaining open long after completion:
   • “Loop task list not syncing correctly” (Dec 29, 2025) – users report inconsistent status across Loop, Planner, and To Do, with no effect from manual sync attempts [learn.microsoft.com]
   • “Loop tasks do not synchronize with Planner” – several users explicitly state “this appears to be a problem faced by many users” with no resolution months later [learn.microsoft.com]
   • “Loop Tasks do no more synchronise with Microsoft To Do” – confirms breakage after tasks were previously working, suggesting backend or schema issues rather than user error [learn.microsoft.com]
   These threads are important because they match your symptoms exactly:
   • Tasks completed days or weeks ago
   • Planner/To Do lagging or frozen
   • Manual sync ineffective

   2. Microsoft staff responses acknowledge backend limitations

   In the Dec 2025 Q&A thread, a Microsoft moderator explicitly states:
   • Sync works in their test tenant
   • But recommends recreating the task list directly in the Loop app and escalating to Microsoft Support if it fails [learn.microsoft.com]
   This pattern (works in clean tenants, fails in real ones) is consistent with plan corruption or stuck Dataverse links, not user behavior.

   3. Community + Reddit confirmation (one‑way and stale sync)

   Reddit and community posts confirm:
   • Sync is often one‑way
   • Planner changes do not reliably flow back to Loop
   • Loop Status views can show outdated task state indefinitely [reddit.com]

   What’s actually going wrong (based on evidence)

   From the sources above, the most consistent causes are:
   1. The task list was not originally created in the Loop app
      • Task lists embedded from OneNote, Teams chats, or copied between workspaces are especially prone to sync failure [learn.microsoft.com]
   2. The underlying Planner plan is partially corrupted
      • Microsoft Support explicitly mentions this possibility and asks for network logs in similar cases (including yours, historically) [RE: [EXTER...0010002261 | Outlook]
   3. Loop Status view is reading stale Planner state
      • Status view aggregates from Planner/Tasks service, not the local Loop document
      • If Planner never received (or acknowledged) the completion update, Status will stay “Open” indefinitely
   4. Manual “Sync now” does not force reconciliation
      • There is no evidence in Microsoft documentation that “Sync now” performs a deep re‑sync; it appears to be a lightweight refresh, not a repair