Hi, in Pre-installation check I'm no able to fix the Session writable requirements.
It is right and writable, I've other installation like Wordpress and PrestaShop that work fine with this session folder but LimeSurvey won't check it fine!
In attached screenshot you can see PHP engine session information and the LS installation error.
I've also try to change in much ways the PHP session.save_path global setting but with the same result.
Also try to give to the folder Everyone permission with full control don't fix it
I'm using IIS 6.2 on Windows Server 2012R2
Any idea to fix it?
Very thanks!

Hi,

LimeSurvey does not directly write to the session save path, however a relative session save path like this looks very unusual to me.

LimeSurvey checks the session by writing a value to it and trying to read in on the next page. Obviously, this does not work with your server configuration so something is fishy.

Wordpress does not really use sessions.

Try to use an absolute session save path.

Solved!
I've added on my global php.ini the following:

[PATH=C:/php72pub/limesurvey]
session.save_path = "C:\php721\session"

in this way I've setted the absolute session save path for only limesurvey website and now work fine.
Thanks!