Complete and reopen tasks
You can mark a task as complete by opening the Outlook task, and selecting Completed for the status. Tasklist will show the task and all its children as completed.
You can reopen a completed task by opening the Outlook task, and selecting a status other than Complete - for example, In Progress. In your task list, this will mark the task and any completed parent tasks as in progress.
By default, your task list displays tasks you have completed today. Tasks completed before today are not shown on your list.
There are two ways to find a completed task and add it back to your list:
•Right-click on your task list, and in the pop-up menu click on Completed Tasks.
In the dialog box you can select the number of days of completed tasks to show on your list. For example, if you want to see tasks completed within the past 30 days, enter 30. Find the completed task that you want to add back to your list, open it by double-clicking on it, and change the status in the Outlook task to In Progress. This will reopen the task and any completed parent tasks.
•Another way to find a completed task is to click on the Find a task button on the Tasklist ribbon bar at the top of your screen:
This will give you a list of all your tasks, active and completed. You can find a particular task by using the search dialog to the left of the task list. When you find the task you want to reopen, click OK, and Tasklist will reopen the task and add it and its parents to your task list.