The solution for the error "PHP extension" curl "must be loaded." On Wamp Server version 2.2 for Windows 7 (64-bit operating system) ONLY.
(files for modification)
The location of the php.ini file is: C: \ wamp \ bin \ apache \ apache2.2.22 \ bin \
php.ini file location: C:\wamp\\bin\php\php5.3.13
phpForApache.ini file location: C: \ wamp \ bin \ php \ php5.3.13 \
Find the extension = php_curl.dll using the find command in notepad in all the above mentioned ini files and delete the semicolon, if any, and it should look like extension = php_curl.dll
Before (;extension=php_curl.dll) after (extension=php_curl.dll)
Now try reloading the magento installation page, where you received the error message " PHP extension" curl "should be loaded , you will not have an error :)
I hope this works for you, how it worked for me, thanks
Mohit source share