Should I block it?
No, this file is 100% safe to run.
 
     
    
        legacyio.dll
Garmin Legacy I/O by Garmin International
| Version: | 2,0,0,0 | 
| MD5: | d1f22fb78335d3faf36eed02781b6e9a | 
| SHA1: | 6dc9bf0816efa6362614a9b0ca150f656dc22eae | 
Overview
legacyio.dll is loaded as dynamic link library that runs in the context of a process. The assembly utilizes the .NET run-time framework (which is required to be installed on the PC).
 Details
Details
| File name: | legacyio.dll | 
| Publisher: | Garmin International | 
| Product name: | Garmin Legacy I/O | 
| Description: | I/O library for legacy Garmin devices | 
| Typical file path: | C:\Program Files\garmin\core update service\legacyio.dll | 
| File version: | 2,0,0,0 | 
| Size: | 3.1 MB (3,254,272 bytes) | 
| Build date: | 5/13/2014 2:26 PM | 
| Digital DNA | 
| File packed: | No | 
| Code language: | Microsoft Visual C# / Basic .NET | 
| .NET CLR: | Yes | 
| .NET NGENed: | No | 
More details
 Distribution by Windows OS
Distribution by Windows OS
| OS version | distribution | 
| Windows 7 Professional | 100.00% |  | 
 Distribution by country
Distribution by country
United States installs about 100.00% of Garmin Legacy I/O.
 Distribution by PC manufacturer
Distribution by PC manufacturer
| PC Manufacturer | distribution | 
| Dell | 100.00% |  |