https://devzone.nordicsemi.com/f/nordic-q-a/120336/west-unknown-command-buildAfter using the backup v2.9.0 project to overwrite the original project, I encountered the following issues during compilation： How to solve it? Using Windows not Linux. Thank you for your help/en-USTelligent Community 13Tue, 01 Apr 2025 12:39:14 GMThttps://devzone.nordicsemi.com/thread/529998?ContentTypeID=1Tue, 01 Apr 2025 12:39:14 GMT137ad170-7792-4731-bb38-c0d22fbe4515:358288f2-1b68-4ab2-8a25-aabf6873277aSimonr<p>Hi</p> <p>Did this at one point work on your end? What do you mean by a &quot;backup&quot; v2.9.0 project here exactly? It seems to be located out of tree. Can you confirm whether you&#39;re building/programming from the command line or using VS Code with the nRF Connect extension? And how exactly did you install the SDK?</p> <p>Best regards,</p> <p>Simon</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/529844?ContentTypeID=1Mon, 31 Mar 2025 14:51:25 GMT137ad170-7792-4731-bb38-c0d22fbe4515:aac4df6e-4e4d-46fd-8d7c-3142f0ba0667Hhhhh<p>Is there a problem with this toolchain?<br /><img style="max-height:240px;max-width:320px;" src="https://devzone.nordicsemi.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/4/pastedimage1743432663841v1.png" alt=" " /></p><div style="clear:both;"></div>