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<p>Hi Thomas</p>
<p>Yes. I have many instances opened concurrently with multiple projects. I too lost the file association with the project qgz a long time ago, due to me having multiple versions on my PC.</p>
<p>To achieve this, simply use the Windows (Start menu)/Mac (application menu), search for the QGIS application and version you want to use, then click to open a new instance.</p>
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<div class="pre" style="margin: 0; padding: 0; font-family: monospace">Regards,<br /><br />Nigel Berjak<br />0823067330<br />Please consider the environment before printing this email.</div>
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<p id="reply-intro">On 2024-07-15 09:19, Thomas Larsen Wessel via QGIS-User wrote:</p>
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<div>I want two instances open at the same time, with each their project, so I can copy layer styling from one project to another. </div>
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Previously I did the following. Go to Windows Explorer, double click a .qgz file, and that project would open in another instance.
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<div>At some point, the file associations were lost, and if I double click the files, it asks what application to use, and QGIS is not even on the list. I think this happened after I installed using osgeo4w-installer, for "Just me" (though I'm not sure). </div>
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<div>Anyway, is there anything I can do to open another instance?</div>
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<div>Sincerely, Thomas</div>
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