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Feature Class suddenly became corrupt when Join Field tool failed

Question asked by MatthewLeonard on Nov 19, 2018
Latest reply on Nov 19, 2018 by Dan_Patterson

In ArcGIS Desktop 10.2, I used arcpy code in the Python interpreter to run the arcpy.JoinField_management tool, to join 2 fields from another table.  For no apparent reason, the tool failed with the error "General Function Failure." 

 

But this is the really weird part: Exactly as that happened, I was watching the attribute table of the target feature class which I had open, and I saw all the records vanish!  Suddenly ArcMap was no longer able to draw that layer.  I still see the feature class in the catalog, but I can't add it to a new map, view its properties, or do anything with it now.  When I try to add it to a new map, I get "error opening feature class." This is mind boggling.  I tried closing and restarting ArcMap, but that didn't help.  Anyone know why this would happen or how to get my data back?  I may just have to look for a backup version of the data...

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