Look for an entry for CoordinateSystemsDir on the right side, and double-click this entry. D. Type the correct path into the Value Data field. e. Close the Registry editor.
If you do not have an ArcCatalog key under ESRI, perform do the following.
a. Right-click ESRI on the left-hand side and select New > Key. b. Name the new key ArcCatalog. c. Right-click ArcCatalog on the left-hand side and select New > Key. d. Name the new key Settings. e. Right-click Settings and select New > String Value. f. Name the new string value CoordinateSystemsDir. g. Double-click CoordinateSystemsDir and enter the path to the Coordinate Systems folder into the Value Data text box. h. Click OK and close the registry editor.
Check to see if the coordinate system files exist in the Coordinate Systems folder:
a. Start Windows Explorer. b. Navigate to ..\ArcGIS\arcexe81\Coordinate Systems folder. c. Examine the contents of the subfolders. There should be many files with a PRJ extension.