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You may experiencing the following error when trying to install Global Protect client on Microsoft based OS :
This advertised application will not be installed because it might be unsafe
Here is the simple solution :
1. Copy GlobalProtect*.msi installer to c:\
2. Open CMD and choose to Run as administrator
3. Type & run : cd c:\
4. Type & run : msiexec /i GlobalProtect*.msi /qb
That's it ... i hope this information will be helpful