topic Arcgis 10.4 or higher not recognize .prj files in shapefile in ArcGIS Online Questions https://community.esri.com/t5/arcgis-online-questions/arcgis-10-4-or-higher-not-recognize-prj-files-in/m-p/17011#M878 <HTML><HEAD></HEAD><BODY><P>Hello guys.<BR />I have a problem with Arcmap 10.4 or higher.<BR />I have some shapefiles with the .prj file, but Arcgis 10.4 does not recognize them.<BR />When I import the shapefile the message Unknown Spatial Reference appears.<BR />In ArcGis 10.3 and below the shapefile coordinate system (.prj) is recognized.<BR />To recognize the coordinate system, I have to use the "Define Projection" tool.<BR />In the .prj file that is in the shapefiles it is like: "GEOGCS["SIRGAS 2000",DATUM["D_SIRGAS_2000",SPHEROID["GRS_1980",6378137,298,257222101]],PRIMEM["Greenwich",0],UNIT["Degree",0,017453292519943295]]"<BR />When I use the Define Projection Tool it looks like this: "GEOGCS["GCS_SIRGAS_2000",DATUM["D_SIRGAS_2000",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433],AUTHORITY["EPSG",4674]]"<BR />When copying the .prj file to a folder "C:\Users\User\AppData\Roaming\ESRI\Desktop10.4\ArcMap\Coordinate Systems" the message appear "Failed to get a coordinate system from "C:\Users\User\AppData\Roaming\ESRI\Desktop10.4\ArcMap\Coordinate Systems\Sirgas 2000.prj; the file may be corrupt" appear.<BR />How do I automatically recognize the coordinate system for ArcGis?</P></BODY></HTML> Sun, 02 Jun 2019 14:51:28 GMT JoelsonPassos 2019-06-02T14:51:28Z Arcgis 10.4 or higher not recognize .prj files in shapefile https://community.esri.com/t5/arcgis-online-questions/arcgis-10-4-or-higher-not-recognize-prj-files-in/m-p/17011#M878 <HTML><HEAD></HEAD><BODY><P>Hello guys.<BR />I have a problem with Arcmap 10.4 or higher.<BR />I have some shapefiles with the .prj file, but Arcgis 10.4 does not recognize them.<BR />When I import the shapefile the message Unknown Spatial Reference appears.<BR />In ArcGis 10.3 and below the shapefile coordinate system (.prj) is recognized.<BR />To recognize the coordinate system, I have to use the "Define Projection" tool.<BR />In the .prj file that is in the shapefiles it is like: "GEOGCS["SIRGAS 2000",DATUM["D_SIRGAS_2000",SPHEROID["GRS_1980",6378137,298,257222101]],PRIMEM["Greenwich",0],UNIT["Degree",0,017453292519943295]]"<BR />When I use the Define Projection Tool it looks like this: "GEOGCS["GCS_SIRGAS_2000",DATUM["D_SIRGAS_2000",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433],AUTHORITY["EPSG",4674]]"<BR />When copying the .prj file to a folder "C:\Users\User\AppData\Roaming\ESRI\Desktop10.4\ArcMap\Coordinate Systems" the message appear "Failed to get a coordinate system from "C:\Users\User\AppData\Roaming\ESRI\Desktop10.4\ArcMap\Coordinate Systems\Sirgas 2000.prj; the file may be corrupt" appear.<BR />How do I automatically recognize the coordinate system for ArcGis?</P></BODY></HTML> Sun, 02 Jun 2019 14:51:28 GMT https://community.esri.com/t5/arcgis-online-questions/arcgis-10-4-or-higher-not-recognize-prj-files-in/m-p/17011#M878 JoelsonPassos 2019-06-02T14:51:28Z Re: Arcgis 10.4 or higher not recognize .prj files in shapefile https://community.esri.com/t5/arcgis-online-questions/arcgis-10-4-or-higher-not-recognize-prj-files-in/m-p/17012#M879 <HTML><HEAD></HEAD><BODY><P>The clue seems to be the datum reference in the AIR.prj.</P><P></P><P>ArcGIS does not recognise this as a proper datum reference :</P><P><IMG class="image-1 jive-image" src="https://community.esri.com/legacyfs/online/449522_pastedImage_1.png" /></P></BODY></HTML> Mon, 03 Jun 2019 10:27:41 GMT https://community.esri.com/t5/arcgis-online-questions/arcgis-10-4-or-higher-not-recognize-prj-files-in/m-p/17012#M879 NeilAyres 2019-06-03T10:27:41Z