Auto-fix error code 3048.2

NIS version 2014
Vista home basic laptop

I noticed that autofix ran on its own and fixed error code 3048.2. Said something to do with virus defs.

  1. Is it ok that autofix ran on its own?

  2. What does error code 3048.2 mean?

  3. Do I need to reinstall my NIS?

I hope I don’t have to reinstall it. It seems to be ok except for this one episode