Hi @Fill ,
Unfortunately, IIS no longer supports versions after PHP 8. That means PHP 7 can run well on IIS but PHP 8 cannot.
If the answer is the right solution, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.
Best regards,
Bruce Zhang