[ntp:questions] Sure GPS - PPS not working

[David Taylor]

OK, Chris, so it's not a hardware issue.  I don't know the message:

   "Exec format error"

on Windows, but it sounds like the support DLL or driver isn't right. 
When you list the COM1 device in the device manager, does it show the 
serialpps.sys in the list of drivers?  If you right-click, Properties 
the .SYS or .DLL files, do they show the Unblock button.  Perhaps 
compare the files against those froma fresh download using a binary 
comparison:

   fc /b <working-file>  <dowloaded-file>

Although it doesn't affect you, I recall that the Windows 8.0 to 8.1 
upgrade required re-installation of a couple of drivers (one unsigned) 
which I needed.

-- 
Cheers,
David
Web: http://www.satsignal.eu