How do I install GD on my windows server version of PHP

Check php_gd2.dll is in your extension directory and uncomment ;extension=php_gd2.dll of your php.ini.

After PHP 8.0, GD extension name changed from php_gd2.dll to php_gd.dll

extension=php_gd.dll

https://php.watch/versions/8.0/gd2-gd-windows

It was in my c:\xampp\php\php.ini

;extension=gd

This was commented out as you can see, removing ; and restarting apache server fixed my problem.

You need to edit your php.ini (found in your C:/PHP folder if you installed PHP here). Add the following line (or remove the ; before it if it exists in there):

extension=php_gd2.dll