Thooky wrote
Have reinstalled again ... but comes another prob. ... In Interpréteur, it refuses the Path C:\Program Files\PHP7\Program Files\ ... or the Path C:\Program Files\PHP7\Program Files (x86)\
Reinstalling is generally the best way to solve issue with Abyss Web Server. Most problems have their origin in minor configuration issues.
Could you please contact our support by email and send us your abyss.conf file for review.
By the way, we've noticed that you're quoting the word "Interpréteur". So if you're prefer using French, please go on. :)