Differences

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+====== Troubleshoot Plesk “[ACL] Access to context [/] is denied!” error ======
+Running Plesk and newly installed LiteSpeed. Main website running well but no access to subdomain webmail.abcdef.com. Error log shows “[ACL] Access to context [/] is denied!”. What happened?
+<code>
+[ACL] Access to context [/] is denied!
+</code>
+is caused by directives from mod_access_xxxx module, "Deny from ..." .
+Full investigation of Apache httpd.conf, included conf files or .htaccess file related to domain webmail.abcdef.com required.
+LiteSpeed read Apache configuration file with "mod_php5,sapi_apache2,python,fcgid" Apache modules ignored.
+/etc/httpd/conf/httpd.conf checked and no problem.
+In /etc/httpd/conf/plesk.conf.d/horde.conf:
+<code>
+    <IfModule mod_fcgid.c>
+        FcgidInitialEnv PP_CUSTOM_PHP_CGI_INDEX fastcgi
+        FcgidInitialEnv PP_CUSTOM_PHP_INI "/etc/abcdef-webmail/horde/horde/php.ini"
+        FcgidMaxRequestLen 134217728
+        <Directory "/usr/share/psa-horde">
+            <Files ~ (\.php$)>
+                SetHandler fcgid-script
+                FCGIWrapper /var/www/cgi-bin/cgi_wrapper/cgi_wrapper .php
+                Options +ExecCGI
+            </Files>
+            Order allow,deny
+            Allow from all
+        </Directory>
+    </IfModule>
+</code>
+Although there is a line "Allow from all" for that directory, it actually was ignored completely since mod_fcgid was black listed in "Apache Ignored Modules".
+Add the following:
+<code>
+<Directory "/usr/share/psa-horde">
+Order allow,deny
+Allow from all
+</Directory>
+</code>
+outside of <IfModule mod_fcgid.c>...</IfModule> fixed the problem.
+Plesk template may need to be customized or changed not to put everything inside <IfModule mod_fcgid.c> block. Alternatively try not to use fcgid as the default PHP handler.