Hello Yoon Sik Woo,
Thank you for posting in the Microsoft Community.
Please accept our sincere welcome here in the Microsoft Community.
I understand that you’re encountering an issue while trying to save tab settings for Planner and To Do in Microsoft. Let’s troubleshoot this together!
Tasks supported by Planner and To Do are:
- Creating and managing tasks
- Assigning tasks to team members
- Setting due dates and reminders
- Organizing tasks into categories or projects
- Collaborating with team members on tasks
- Tracking progress and completion of tasks
Here are some potential solutions based on the information I found:
- Check Your Team Membership:
- Enable Member Permissions:
- Use the Web Version of Planner:
Regarding the error message "Unable to save tab settings, please try again", this may be a temporary issue with the application or a problem with your internet connection. I recommend trying again later or checking your internet connection to see if that is the issue. If the problem persists, you can contact Microsoft support for further assistance.
Hoping that would help the issue.
Best regards,
Ciarra BD.
Microsoft Moderator