https://community.esri.com/t5/arcgis-pro-questions/quot-notebook-not-found-quot-initializing-kernel/m-p/1584027#M92902 <P>This is a recent error I have been getting whenever I try an open a notebook in ArcGIS Pro after I updated to 3.4.</P><P>To resolve my error, I uninstalled Pro along with removing all data in C:\user\AppData-Local and Roaming.</P><P>I reinstalled ArcGIS Pro and left it in its previous version 3.3.x and now have no issues.</P><P>Curious if anyone else is having issues, I am nervous to update my version to 3.4 again, even after starting on a clean slate.</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Nick_Creedon_0-1739286488041.png" style="width: 400px;"><img src="https://community.esri.com/t5/image/serverpage/image-id/125079i3B95E4DEBC7D9FFF/image-size/medium?v=v2&amp;px=400" role="button" title="Nick_Creedon_0-1739286488041.png" alt="Nick_Creedon_0-1739286488041.png" /></span></P><P>&nbsp;</P> Tue, 11 Feb 2025 15:08:31 GMT Nick_Creedon 2025-02-11T15:08:31Z https://community.esri.com/t5/arcgis-pro-questions/quot-notebook-not-found-quot-initializing-kernel/m-p/1584027#M92902 <P>This is a recent error I have been getting whenever I try an open a notebook in ArcGIS Pro after I updated to 3.4.</P><P>To resolve my error, I uninstalled Pro along with removing all data in C:\user\AppData-Local and Roaming.</P><P>I reinstalled ArcGIS Pro and left it in its previous version 3.3.x and now have no issues.</P><P>Curious if anyone else is having issues, I am nervous to update my version to 3.4 again, even after starting on a clean slate.</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Nick_Creedon_0-1739286488041.png" style="width: 400px;"><img src="https://community.esri.com/t5/image/serverpage/image-id/125079i3B95E4DEBC7D9FFF/image-size/medium?v=v2&amp;px=400" role="button" title="Nick_Creedon_0-1739286488041.png" alt="Nick_Creedon_0-1739286488041.png" /></span></P><P>&nbsp;</P> Tue, 11 Feb 2025 15:08:31 GMT https://community.esri.com/t5/arcgis-pro-questions/quot-notebook-not-found-quot-initializing-kernel/m-p/1584027#M92902 Nick_Creedon 2025-02-11T15:08:31Z https://community.esri.com/t5/arcgis-pro-questions/quot-notebook-not-found-quot-initializing-kernel/m-p/1584102#M92917 <P>Hey Nick,</P><P>I had a similiar issue and resolved it by moving my notebooks to a new directory within my users folder.&nbsp;</P><P>&nbsp;</P><P>There might be a few red herrings on this. The error message you receive make it appear that something is blocking the notebook from running on Localhost or against port 8888.</P><P>If you do encounter any further problems on this then would recommend raising a Support Case. We have seen this error before but seems all currently reported instances of it are resolved by clearing the AppData directory as you have done.</P><P>&nbsp;</P><P>Hope that helps,</P><P>David</P> Tue, 11 Feb 2025 17:26:28 GMT https://community.esri.com/t5/arcgis-pro-questions/quot-notebook-not-found-quot-initializing-kernel/m-p/1584102#M92917 David_McRitchie 2025-02-11T17:26:28Z