After upgrade my apache server to version 2.4 i have a problem.
Syntax error in line like Order deny,allow Deny from all
Problem in depricated Orders.

Access control

In 2.2, access control based on client hostname, IP address, and other characteristics of client requests was done using the directives Order, Allow, Deny, and Satisfy.

In 2.4, such access control is done in the same way as other authorization checks, using the new module mod_authz_host. The old access control idioms should be replaced by the new authentication mechanisms, although for compatibility with old configurations, the new module mod_access_compat is provided.

Mixing old and new directives

Mixing old directives like Order, Allow or Deny with new ones like Require is technically possible but discouraged. mod_access_compat was created to support configurations containing only old directives to facilitate the 2.4 upgrade. Please check the examples below to get a better idea about issues that might arise.

Here are some examples of old and new ways to do the same access control.

In this example, there is no authentication and all requests are denied.
2.2 configuration:

Order deny,allow
Deny from all

2.4 configuration:

Require all denied

In this example, there is no authentication and all requests are allowed.
2.2 configuration:

Order allow,deny
Allow from all

2.4 configuration:

Require all granted

In the following example, there is no authentication and all hosts in the example.org domain are allowed access; all other hosts are denied access.
2.2 configuration:

Order Deny,Allow
Deny from all
Allow from example.org

2.4 configuration:

Require host example.org

In the following example, mixing old and new directives leads to unexpected results.
Mixing old and new directives: NOT WORKING AS EXPECTED

DocumentRoot "/var/www/html"
<Directory "/">
    AllowOverride None
    Order deny,allow
    Deny from all
</Directory>

<Location "/server-status">
    SetHandler server-status
    Require local
</Location>

access.log - GET /server-status 403 127.0.0.1
error.log - AH01797: client denied by server configuration: /var/www/html/server-status

Why httpd denies access to servers-status even if the configuration seems to allow it? Because mod_access_compat directives take precedence over the mod_authz_host one in this configuration merge scenario.

This example conversely works as expected:
Mixing old and new directives: WORKING AS EXPECTED

DocumentRoot "/var/www/html"

<Directory "/">
    AllowOverride None
    Require all denied
</Directory>

<Location "/server-status">
    SetHandler server-status
    Order deny,allow
    Deny from all
    Allow From 127.0.0.1
</Location>

access.log — GET /server-status 200 127.0.0.1

So even if mixing configuration is still possible, please try to avoid it when upgrading: either keep old directives and then migrate to the new ones on a later stage or just migrate everything in bulk.

In many configurations with authentication, where the value of the Satisfy was the default of ALL, snippets that simply disabled host-based access control are omitted:
2.2 configuration:

Order Deny,Allow
Deny from all
AuthBasicProvider File
AuthUserFile /example.com/conf/users.passwd
AuthName secure
Require valid-user
<strong>2.4 configuration:</strong>
# No replacement needed
AuthBasicProvider File
AuthUserFile /example.com/conf/users.passwd
AuthName secure
Require valid-user

In configurations where both authentication and access control were meaningfully combined, the access control directives should be migrated. This example allows requests meeting both criteria:
2.2 configuration:

Order allow,deny
Deny from all
# Satisfy ALL is the default
Satisfy ALL
Allow from 127.0.0.1
AuthBasicProvider File
AuthUserFile /example.com/conf/users.passwd
AuthName secure
Require valid-user

2.4 configuration:
AuthBasicProvider File
AuthUserFile /example.com/conf/users.passwd
AuthName secure
Require valid-user
Require ip 127.0.0.1


In configurations where both authentication and access control were meaningfully combined, the access control directives should be migrated. This example allows requests meeting either criteria:
2.2 configuration:

Order allow,deny
Deny from all
Satisfy any
Allow from 127.0.0.1
AuthBasicProvider File
AuthUserFile /example.com/conf/users.passwd
AuthName secure
Require valid-user

2.4 configuration:

AuthBasicProvider File
AuthUserFile /example.com/conf/users.passwd
AuthName secure
# Implicitly <RequireAny>
Require valid-user
Require ip 127.0.0.1