Flight Gear unsafe?

FlightGear-2017.1.1 is removed as a threat? How can I prevent this? It's a known open source flight simulator, most current release. There is no option offered to restore the file. Do I have to remove Norton to make it installable? See Details below:

Filename: FlightGear-2017.1.1_CB-DL-Manager.exe
Full Path: ........\Downloads\FlightGear-2017.1.1_CB-DL-Manager.exe

 

FlightGear-2017.1.1_CB-DL-Manager.exe
Locate

 


Very Few Users
Fewer than 5 users in the Norton Community have used this file.

Very New
This file was released less than 1 week  ago.

Unknown
This file risk is not known.


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http://d5.computerbild.de/downloadguides/90348bea-4839-40b7-a6c5-cd9f3a04c53a/FlightGear-2017.1.1_CB-DL-Manager.exe
Downloaded File  from d5.computerbild.de
Source: External Media


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File Thumbprint - SHA:
5487e86e2c622c56322eb16d0b198e69291a6f9f4e38da7707574103b7afe6b1
File Thumbprint - MD5:
53f05c8402737b0414a0db409e464bdf