.Net Framework 4.6.1 installation doesn't progress

I'm trying to update a freshly installed windows vista old notebook.
I followed first step to download all needed files.
Then I launched installer command from "client" subdirectory.
Procedure seems to install various files.
But then, when it tries to install ".NET Framework 4.6.1"... well something seems going wrong...
All process seems stuck and installation progress bar doesn't move anymore.
Is this a known issue?
How can I solve it?
Thanks a lot in advance!
Bye!
I followed first step to download all needed files.
Then I launched installer command from "client" subdirectory.
Procedure seems to install various files.
But then, when it tries to install ".NET Framework 4.6.1"... well something seems going wrong...
All process seems stuck and installation progress bar doesn't move anymore.
Is this a known issue?
How can I solve it?
Thanks a lot in advance!
Bye!
