Microsoft planner notifications

Try these:

Verify Notification Settings in Planner:
Go to Planner Hub and select the plan you are working on.
Click on the ... (More options) next to the plan name and select Plan settings or Settings.
Ensure that Email notifications for task activity and Notifications in Teams (if integrated) are enabled.
Double-check these settings in case they were reset during the update.


Check Microsoft 365 Group Notification Settings: (Each Planner plan is tied to a Microsoft 365 Group. Sometimes, group notification settings can override Planner’s settings.)
Go to Outlook Web and find the Groups section in the sidebar.
Select the group associated with your Planner plan.
Go to Settings > Edit group and make sure Send all group conversations and events to members' inboxes is checked. This setting ensures that group activities, including Planner updates, are delivered directly to the group members’ inboxes.


Enable Notifications in Teams (If Integrated with Planner):
Open Microsoft Teams and navigate to the Planner app (or Tasks by Planner and To Do).
Go to Settings > Notifications and ensure that Planner notifications are enabled.
Confirm that notifications for task updates are not being blocked by Teams.


Enable Microsoft Planner Notifications in Outlook
Go to Outlook Settings.
Navigate to Mail > Rules and Alerts and check if there is a rule that filters or redirects Planner emails.
Sometimes, notifications from Planner are considered low priority by Outlook’s Focused Inbox. Check the Other tab in your inbox or turn off Focused Inbox to make sure Planner notifications are visible.

If notifications for task completion are still not working reliably, consider using Microsoft Power Automate to create custom notifications for Planner tasks.
Here’s a sample workflow:
Go to Power Automate and create a new flow.
Choose When a task is completed in Planner as the trigger.
Set up an action to Send an email or Send a Teams notification to notify relevant users when a task is marked as complete.


Clear Browser Cache and Try Different Browsers (for Web Version)
Ensure that you are using the latest versions of both the Teams and Planner apps.