Jackie McBride on "Problem while installing wordpress"

I'd tried to install WordPress with web platform, but that massage appear
" we're sorry. the following products have failed to install.
PHP 5.5.36 For IIS Express
This product did not install successfully: Downloaded file failed signature verification and may have been tampered with

WordPress
This product caot be installed because a product that it depends on did not install successfully. "

so I tried to install PHP 5.5.36 For IIS Express and it gives me a failed massage.

Please help.

Thnx alot

Hello, demosforever, & welcome to the WordPress support forum.

Could you please tell us about your server configuration? Who is your hosting provider? Is this dedicated or VPs?