Error - VirtualHost (no replies)

I have set following setting for virtual-Host.
Note:I have changed port :80 to :81


# Virtual Hosts
#

<VirtualHost *:80>
ServerName localhost
DocumentRoot c:/wamp641/www
<Directory "c:/wamp641/www/">
Options +Indexes +Includes +FollowSymLinks +MultiViews
AllowOverride All
Require local
</Directory>
</VirtualHost>
#
<VirtualHost *:81>
DocumentRoot "c:/wamp641/www/cms/public"
ServerName cms.com
<Directory "c:/wamp641/www/cms/public">
AllowOverride All
Require all granted
</Directory>
</VirtualHost>