I am sure this is not a replication issue. I already red about : Apache not starting on windows 7 and XAMPP on Windows - Apache not starting.
But still I haven't found a solution to my concern which seem to be particular.
I am on Windows 7 64bits. It is a fresh installed OS with all important updates made.
I did install xampp 7.x to work on Drupal 7. But apache error "0xc000007b".
After a lot of research I found out that new versions of Apache have a lot of difficulties working on Windows 7.
So I found "XAMPP 1.8.2" (a very old version), binary files that I just donwloaded, uncompressed and place on root drive "c:\". I lauched "XAMPP Control Panel", "Apache" and "MySQL". It worked fine. I could work on Drupal 7.
But now I need to work on Drupal 8 which requires PHP 5.5.9. And PHP 5.5.9 requires APACHE 2.4.
Attempt 1 : New binary files for "apache" and "php"
I upgraded PHP and APACHE (downloading binary PHP and APACHE and replacing folder "php" and overidding folder "apache" on my XAMPP folder). When I launch XAMPP Control Panel, MySQL still works but Apache show this error :
11:42:18 AM [Apache] Port 80 in use by "Unable to open process" with PID 4!
11:42:18 AM [Apache] Apache WILL NOT start without the configured ports free!
11:42:18 AM [Apache] You need to uninstall/disable/reconfigure the blocking application
11:42:18 AM [Apache] or reconfigure Apache and the Control Panel to listen on a different port
11:42:18 AM [Apache] Attempting to start Apache app...
11:42:19 AM [Apache] Status change detected: running
Attempt 2 : Complete new 7.x version install file
When I install a complete new version (with the xampp 7.x install file) such as "7.x", the error message is now : 0c000007b.
How do you think I can solve this issue ?
Thank you a lot.