Se você estiver usando o Magento 2.2.4. Primeiro, vá para o diretório de log do Apache e
[Wed May 30 00:58:17.857269 2018] [core:alert] [pid 7184:tid 1244] [client 127.0.0.1:65528] C:/Creation/wamp64/www/m2version/ms-live-version/.htaccess: Invalid command '<IfVersion', perhaps misspelled or defined by a module not included in the server configuration
[Wed May 30 00:58:42.568180 2018] [core:alert] [pid 7184:tid 1248] [client 127.0.0.1:49165] C:/Creation/wamp64/www/m2version/ms-live-version/.htaccess: Invalid command '<IfVersion', perhaps misspelled or defined by a module not included in the server configuration
[Wed May 30 00:59:01.667499 2018] [core:alert] [pid 7184:tid 1252] [client 127.0.0.1:49169] C:/Creation/wamp64/www/m2version/ms-live-version/.htaccess: Invalid command '<IfVersion', perhaps misspelled or defined by a module not included in the server configuration
[Wed May 30 01:00:04.655715 2018] [core:alert] [pid 7184:tid 1272] [client 127.0.0.1:49174] C:/Creation/wamp64/www/m2version/ms-live-version/.htaccess: Invalid command '<IfVersion', perhaps misspelled or defined by a module not included in the server configuration
[Wed May 30 01:00:35.151803 2018] [core:alert] [pid 7184:tid 1272] [client 127.0.0.1:49201] C:/Creation/wamp64/www/m2version/ms-live-version/.htaccess: Invalid command '<IfVersion', perhaps misspelled or defined by a module not included in the server configuration
Segundo o log, o principal problema é um arquivo .htaccess. Não sei o motivo exato, mas o seguinte código remover do arquivo .htaccess está funcionando.
Remova o código da tag do arquivo.
<Files composer.json>
<IfVersion < 2.4>
order allow,deny
deny from all
</IfVersion>
<IfVersion >= 2.4>
Require all denied
</IfVersion>
</Files>
<Files composer.lock>
<IfVersion < 2.4>
order allow,deny
deny from all
</IfVersion>
<IfVersion >= 2.4>
Require all denied
</IfVersion>
</Files>
<Files .gitignore>
<IfVersion < 2.4>
order allow,deny
deny from all
</IfVersion>
<IfVersion >= 2.4>
Require all denied
</IfVersion>
</Files>
<Files .htaccess>
<IfVersion < 2.4>
order allow,deny
deny from all
</IfVersion>
<IfVersion >= 2.4>
Require all denied
</IfVersion>
</Files>
<Files .htaccess.sample>
<IfVersion < 2.4>
order allow,deny
deny from all
</IfVersion>
<IfVersion >= 2.4>
Require all denied
</IfVersion>
</Files>
<Files .php_cs.dist>
<IfVersion < 2.4>
order allow,deny
deny from all
</IfVersion>
<IfVersion >= 2.4>
Require all denied
</IfVersion>
</Files>
<Files .travis.yml>
<IfVersion < 2.4>
order allow,deny
deny from all
</IfVersion>
<IfVersion >= 2.4>
Require all denied
</IfVersion>
</Files>
<Files CHANGELOG.md>
<IfVersion < 2.4>
order allow,deny
deny from all
</IfVersion>
<IfVersion >= 2.4>
Require all denied
</IfVersion>
</Files>
<Files COPYING.txt>
<IfVersion < 2.4>
order allow,deny
deny from all
</IfVersion>
<IfVersion >= 2.4>
Require all denied
</IfVersion>
</Files>
<Files Gruntfile.js>
<IfVersion < 2.4>
order allow,deny
deny from all
</IfVersion>
<IfVersion >= 2.4>
Require all denied
</IfVersion>
</Files>
<Files LICENSE.txt>
<IfVersion < 2.4>
order allow,deny
deny from all
</IfVersion>
<IfVersion >= 2.4>
Require all denied
</IfVersion>
</Files>
<Files LICENSE_AFL.txt>
<IfVersion < 2.4>
order allow,deny
deny from all
</IfVersion>
<IfVersion >= 2.4>
Require all denied
</IfVersion>
</Files>
<Files nginx.conf.sample>
<IfVersion < 2.4>
order allow,deny
deny from all
</IfVersion>
<IfVersion >= 2.4>
Require all denied
</IfVersion>
</Files>
<Files package.json>
<IfVersion < 2.4>
order allow,deny
deny from all
</IfVersion>
<IfVersion >= 2.4>
Require all denied
</IfVersion>
</Files>
<Files php.ini.sample>
<IfVersion < 2.4>
order allow,deny
deny from all
</IfVersion>
<IfVersion >= 2.4>
Require all denied
</IfVersion>
</Files>
<Files README.md>
<IfVersion < 2.4>
order allow,deny
deny from all
</IfVersion>
<IfVersion >= 2.4>
Require all denied
</IfVersion>
</Files>
<Files auth.json>
<IfVersion < 2.4>
order allow,deny
deny from all
</IfVersion>
<IfVersion >= 2.4>
Require all denied
</IfVersion>
</Files>
<Files magento_umask>
<IfVersion < 2.4>
order allow,deny
deny from all
</IfVersion>
<IfVersion >= 2.4>
Require all denied
</IfVersion>
</Files>
Nota: Não sei se há problemas no futuro ou não. Mas isso me ajuda.