https://community.esri.com/t5/arcmap-questions/default-coordinate-system-when-opening-arcmap/m-p/1133496#M3332 <P>In short, no.&nbsp; The first layer added to a map set the coordinate system.&nbsp; In Arcgis Pro, you can define a project template for new projects</P> Thu, 13 Jan 2022 17:50:10 GMT DanPatterson 2022-01-13T17:50:10Z https://community.esri.com/t5/arcmap-questions/default-coordinate-system-when-opening-arcmap/m-p/1133485#M3331 <P>Hello Esri Community,</P><P>Wondering if there is a way to create a default coordinate system every time I use or open ArcMap.&nbsp; Currently using ArcMap version 10.8.1.&nbsp;</P><P>Thank You.&nbsp;</P> Thu, 13 Jan 2022 17:26:59 GMT https://community.esri.com/t5/arcmap-questions/default-coordinate-system-when-opening-arcmap/m-p/1133485#M3331 rhunley3 2022-01-13T17:26:59Z https://community.esri.com/t5/arcmap-questions/default-coordinate-system-when-opening-arcmap/m-p/1133496#M3332 <P>In short, no.&nbsp; The first layer added to a map set the coordinate system.&nbsp; In Arcgis Pro, you can define a project template for new projects</P> Thu, 13 Jan 2022 17:50:10 GMT https://community.esri.com/t5/arcmap-questions/default-coordinate-system-when-opening-arcmap/m-p/1133496#M3332 DanPatterson 2022-01-13T17:50:10Z https://community.esri.com/t5/arcmap-questions/default-coordinate-system-when-opening-arcmap/m-p/1133497#M3333 <P>Thank you.</P> Thu, 13 Jan 2022 17:51:53 GMT https://community.esri.com/t5/arcmap-questions/default-coordinate-system-when-opening-arcmap/m-p/1133497#M3333 rhunley3 2022-01-13T17:51:53Z