Golf League Secretary is a 32 bit program and optimized for Windows 32-bit, however, it will run on 64 bit Vista, 7, 8, and 10 but is installed a little differently.  When installing or updating GLS  on Windows you may run into the following security warning error signs from Windows Defender.  If you have a different Anti-Virus program it may also warn you about installing GLS in a similar way...  You can bypass these as follows:

 

1. Click "More Info" link...

 

2. Click "Run Anyway" button...

 

 

The program should install with no problem at this point...
 

 

Also See:

Installing GLS on Windows 64 bit