title: Windows considers it a different app after changing signing method
body: <p>We've been working on a Windows UWP application for a couple of years. In the past, we've been distributing it through Microsoft Store and also giving out some copies to testers with a self-signed certificate.</p>
  <p>Recently we decided to start distributing builds directly, so we obtained a trusted certificate from a certificate authority. The problem is that when someone tries to install the new build on a computer, Windows complains that it &quot;cannot install package because a different package with the same name is already installed&quot;, and requires that the old app be uninstalled before the new one can be used.</p>
  <p>What causes this? Is there anything I can do to avoid it?</p>
  <p>Thanks.</p>