https://community.esri.com/t5/arcgis-pro-questions/the-tool-compute-confusion-matrix-does-not-start/m-p/1015858#M35885 <P>Hi! What are you using as the&nbsp;Output Confusion Matrix name?</P> Tue, 12 Jan 2021 08:59:29 GMT Mary_Murphy 2021-01-12T08:59:29Z https://community.esri.com/t5/arcgis-pro-questions/the-tool-compute-confusion-matrix-does-not-start/m-p/1015519#M35845 <P><SPAN>I want to check the classification accuracy with the confusion matrix, but the tool is not working. I've done this previously in early versions of ArcGIS and it worked. What could be the reason?</SPAN></P><P><SPAN>ERROR 999999: Something unexpected caused the tool to fail. Contact Esri Technical Support (<A href="http://esriurl.com/support" target="_blank" rel="noopener">http://esriurl.com/support</A>) to Report a Bug, and refer to the error help for potential solutions or workarounds.<BR />Failed to execute (ComputeConfusionMatrix).<BR /></SPAN></P><P><SPAN>Failed to execute (ComputeConfusionMatrix).<BR /></SPAN></P> Mon, 11 Jan 2021 14:03:19 GMT https://community.esri.com/t5/arcgis-pro-questions/the-tool-compute-confusion-matrix-does-not-start/m-p/1015519#M35845 ВалерияГабова 2021-01-11T14:03:19Z https://community.esri.com/t5/arcgis-pro-questions/the-tool-compute-confusion-matrix-does-not-start/m-p/1015536#M35850 <P>One thing I do when I see strange things like this is rename the ESRI folder to ESRI_OLD.&nbsp; These folders are located in your C:\Users\&lt;user_profile&gt;\appdata\local and&nbsp;C:\Users\&lt;user_profile&gt;\appdata\roaming paths.&nbsp; If it's worked in the past, I wonder if there's something "odd" here.&nbsp;&nbsp;</P> Mon, 11 Jan 2021 14:54:12 GMT https://community.esri.com/t5/arcgis-pro-questions/the-tool-compute-confusion-matrix-does-not-start/m-p/1015536#M35850 Robert_LeClair 2021-01-11T14:54:12Z https://community.esri.com/t5/arcgis-pro-questions/the-tool-compute-confusion-matrix-does-not-start/m-p/1015858#M35885 <P>Hi! What are you using as the&nbsp;Output Confusion Matrix name?</P> Tue, 12 Jan 2021 08:59:29 GMT https://community.esri.com/t5/arcgis-pro-questions/the-tool-compute-confusion-matrix-does-not-start/m-p/1015858#M35885 Mary_Murphy 2021-01-12T08:59:29Z https://community.esri.com/t5/arcgis-pro-questions/the-tool-compute-confusion-matrix-does-not-start/m-p/1015866#M35887 <P>Hi! С<SPAN>onfusion_matrix, matrix, accuracy, or something like that.</SPAN></P> Tue, 12 Jan 2021 10:19:41 GMT https://community.esri.com/t5/arcgis-pro-questions/the-tool-compute-confusion-matrix-does-not-start/m-p/1015866#M35887 ВалерияГабова 2021-01-12T10:19:41Z https://community.esri.com/t5/arcgis-pro-questions/the-tool-compute-confusion-matrix-does-not-start/m-p/1015867#M35888 <P>Thanks for the answer! Unfortunately this doesn't work for me. Hope someone can use your advice!</P> Tue, 12 Jan 2021 10:22:36 GMT https://community.esri.com/t5/arcgis-pro-questions/the-tool-compute-confusion-matrix-does-not-start/m-p/1015867#M35888 ВалерияГабова 2021-01-12T10:22:36Z https://community.esri.com/t5/arcgis-pro-questions/the-tool-compute-confusion-matrix-does-not-start/m-p/1016284#M35942 <P>Are you saving it to a folder or a .gdb? If saving it to a folder, put&nbsp; .dbf after the name, and keep the name short, sweet, no special characters, no spaces [the usual].</P> Wed, 13 Jan 2021 08:51:50 GMT https://community.esri.com/t5/arcgis-pro-questions/the-tool-compute-confusion-matrix-does-not-start/m-p/1016284#M35942 Mary_Murphy 2021-01-13T08:51:50Z https://community.esri.com/t5/arcgis-pro-questions/the-tool-compute-confusion-matrix-does-not-start/m-p/1044230#M39341 <P>I'm having this same problem. Have you resolved the issue since posting?&nbsp;</P><P>Mine worked for me until I edited some of the accuracy points but I don't see why that would make a difference.</P> Tue, 06 Apr 2021 17:16:13 GMT https://community.esri.com/t5/arcgis-pro-questions/the-tool-compute-confusion-matrix-does-not-start/m-p/1044230#M39341 JillC 2021-04-06T17:16:13Z https://community.esri.com/t5/arcgis-pro-questions/the-tool-compute-confusion-matrix-does-not-start/m-p/1271206#M67109 <P>I had the same problem and this fixed it, thank you!</P> Thu, 23 Mar 2023 22:34:43 GMT https://community.esri.com/t5/arcgis-pro-questions/the-tool-compute-confusion-matrix-does-not-start/m-p/1271206#M67109 GretchenRichter 2023-03-23T22:34:43Z