<p>The task must be configured in two steps.</p>
<p>First you create a simple task that start at 0:00, every day. Then, you go in <code>Advanced...</code> (or similar depending on the operating system you are on) and select the <code>Repeat every X minutes</code> option for 24 hours.</p>
<p>The key here is to find the advanced properties. If you are using the XP wizard, it will only offer you to launch the advanced dialog once you created the task.</p>
<p>On more recent versions of Windows (7+ I think?):</p>
<ul>
<li>
<p>Double click the task and a property window will show up.</p>
</li>
<li>
<p>Click the <code>Triggers</code> tab.</p>
</li>
<li>
<p>Double click the trigger details and the Edit Trigger window will show up.</p>
</li>
<li>
<p>Under <code>Advanced settings</code> panel, tick <code>Repeat task every</code> xxx minutes, and set <code>Indefinitely</code> if you need.</p>
</li>
<li>
<p>Finally, click ok.</p>
</li>
</ul>
