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 *
Forum:
WampServer English