https://forge.codesys.com/u/james/discussion/general/thread/fc28b541fe/2025-10-28T11:26:18.725000ZRecent posts to Handle 0 is invalid2025-10-28T11:26:18.725000Z2025-10-28T11:26:18.725000Zjameshttps://forge.codesys.com/u/james/https://forge.codesys.com6252fb384280f5ae3394a4f867ed98d0963e214e

<div class="markdown_content"><p>Hello,<br/> I am rather new to Codesys, final year engineering apprentice. <br/> I am trying to get good grip of Codesys to implent it in my company.</p> <p>Here is what i am using:<br/> Windows 11<br/> Codesys V3.5 Patch 1<br/> Raspberry Pi 5 with visualization.</p> <p>Problem: <strong>Nothing happens when i try to switch to Codesys perspective, the view stays in HMI project</strong>.</p> <p>This is an issue because me and my colleagues all use the Codesys perspective and is more intuitive to us and we are still learning to use use the application.<br/> I have tried looking on the blogs but i can't find any that have solved this issue.</p> <p>There is also a message that started to appear at the same time as this problem (<strong>The project handle 0 is invalid</strong>).<br/> Error appears when want to switch to a different project or when i try to close it.<br/> When I close the message, i can no longer close my current project so i have to close Codesys to open a new project.</p> <p>Any thoughts??</p></div>