Changes

This command tests the validity of your <code>httpd.conf</code> file and should return the line where the error is encountered.  

This command tests the validity of your <code>httpd.conf</code> file and should return the line where the error is encountered.  

In addition to common syntax errors due to carelessness, one of the most common errors is the absence of the file <code>C:\php\php7apache2_4.dll</code>. This file is indeed missing if you have downloaded the wrong version of PHP ('''<u>No</u>''' '''Thread Safe''') instead of the '''Thread Safe''' version. In this case, download the good archive ('''Thread Safe''') and perform the [[Manual_Installation_On_Windows#Extract_the_archive_for_PHP_installation]] part again.

In addition to common syntax errors due to carelessness, one of the most common errors is the absence of the file <code>C:\php\php7apache2_4.dll</code>. This file is indeed missing if you have downloaded the wrong version of PHP ('''<u>No</u>''' '''Thread Safe''') instead of the '''Thread Safe''' version. In this case, download the good archive ('''Thread Safe''') and perform the [[#Extract_the_archive_to_install_PHP]] part again.

Another problem that can be encountered is the impossibility to start '''Apache2''' because the port '''80''' is already used by another program. See the appendix [[Manual_Installation_On_Windows#What are "Listening Ports" and how to know if a program already occupies a specific port? |What are "Listening Ports" and how to know if a program already occupies a specific port?]] for instructions on how to proceed.

Another problem that can be encountered is the impossibility to start '''Apache2''' because the port '''80''' is already used by another program. See the appendix [[#What_are_.22Listening_Ports.22_and_how_do_I_know_if_a_program_already_occupies_a_specific_port.3F|What are "Listening Ports" and how to know if a program already occupies a specific port?]] for instructions on how to proceed.

Once you have corrected any errors, try again to start the '''Apache2.4''' Service with the command mentioned above.

Once you have corrected any errors, try again to start the '''Apache2.4''' Service with the command mentioned above.