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How to Recover Missing Microsoft Planner Comments and Back Up Tasks

Emma Brown Sep 27, 2026 870 views

Question details

The user is experiencing disappearing comments when updating Microsoft Planner tasks and needs a reliable way to recover them and export task comments for backup.

How to Recover Missing Microsoft Planner Comments and Back Up Tasks

Product: Microsoft Planner
Device & OS: not provided
Scenario: Adding new comments to tasks in Microsoft Planner and attempting to export task history.
Observed behavior: Comments disappear from the task card immediately after being submitted, and Microsoft Planner lacks a built-in feature to export these comments.

Before you start

Before attempting to retrieve lost comments, ensure you are logged into your Microsoft 365 account with active permissions for the specific Planner group, and verify your internet connection to rule out simple synchronization delays.

Solution 1Recommended

Retrieve Missing Comments via the Associated Microsoft 365 Group Mailbox

Because Planner comments are processed and stored as email threads in the associated Microsoft 365 Group, you can often find comments that failed to render in the Planner UI by checking the group's inbox.

Microsoft Planner is deeply integrated with Microsoft 365 Groups. When you comment on a task, it actually sends an email to the Group's Exchange mailbox. If Planner experiences a UI synchronization glitch where comments disappear, the backend data usually remains safe in Outlook.

Open Outlook on the Web

Navigate to Groups

Scroll down the left-hand navigation pane until you find the 'Groups' folder section.

Select the Planner Group

Click on the Group name that exactly matches the name of your Microsoft Planner board.

Locate the Task Thread

Search the Group inbox for the name of the specific task. You will find an email conversation thread containing all the submitted comments, including the ones that disappeared from the Planner interface.

Retrieve Missing Comments via the Associated Microsoft 365 Group Mailbox

Community Updates: This disappearing comment issue is actively discussed in the Microsoft Community. Keeping your Office 365 services updated may eventually patch the frontend sync bug.

Solution 2

Automate Task and Comment Backups with Power Automate

Since Microsoft Planner does not natively support exporting comments, you can build a Power Automate flow to extract and save them into an Excel spreadsheet or SharePoint list.

Free Microsoft Office alternative

Manage Your Project Backups Efficiently with WPS Office

While Microsoft Planner handles team assignments, securing your project backups in spreadsheets and reports is much easier with a reliable, offline-capable office suite. WPS Office is a lightweight, all-in-one alternative to Microsoft Office that lets you view, edit, and organize your exported project data without expensive subscriptions or frustrating cloud sync glitches.

1. Download WPS Office: Visit the official WPS Office website and download the free installation package for your device.
2. Open Your Backup Files: Launch WPS Spreadsheets to seamlessly open the Excel backups generated from your project trackers.
3. Use Task Templates: Click on 'Templates' on the homepage to find professional task trackers and project management sheets.

100% free and lightweight office suite for PC and mobile.Complete format compatibility with Microsoft Excel (.xlsx) and Word (.docx) for opening your Planner backups.Work completely offline to avoid cloud synchronization and disappearing data errors.Rich built-in project management and task tracking templates.

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Frequently Asked Questions

Why do my comments randomly disappear in Microsoft Planner?

This is a known synchronization bug within the Planner web interface. When multiple users submit comments or there is a minor network delay, the user interface fails to render the new data. However, the comments are usually safely stored in the backend Exchange mailbox of the associated Microsoft 365 Group.

Can I use the 'Export plan to Excel' button to save comments?

No, the built-in 'Export plan to Excel' feature only exports standard task metadata, such as the task name, assigned users, progress, and due dates. It does not include the task description, checklist items, or task comments.

Where exactly are Microsoft Planner comments stored?

Planner comments are stored as email threads in the Exchange Online mailbox of the Microsoft 365 Group that was automatically created when the plan was built. They are not stored directly inside the Planner application itself.

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