Virtual host on WAMP server works for Firefox only - browser

Question

I have installed WAMP Server and added virtual host.
Strange thing:
On Firefox (my default browser) everything works ok.
On other browsers (Chrome, IE, Opera) the localhost is ok. I can run
php files in default directory/subdirectories, phpMyAdmin works ok as
well. But virtual host is not accessible (error
DNS_PROBE_FINISHED_NXDOMAIN or DNS_PROBE_FINISHED_BAD_CONFIG - see comments in hosts file).
Can you help me to find, why virtual hosts does not work on other browsers than default Firefox?
I am not experienced in this stuff, so it is possible that I do some very basic mistake.
More details:
I run WAMP Server 3.2.6 (64 bit) on Windows 10
I use port 8080 because of some
port conflict (probably Skype)
Adding Virtual Host via WAMP was
"easy", but I have to modify host file (port 8080 was missing).
Windows hosts file:
127.0.0.1 localhost
# with line "127.0.0.1 localhost" browser returns DNS_PROBE_FINISHED_NXDOMAIN
# without line "127.0.0.1 localhost" browser returns DNS_PROBE_FINISHED_BAD_CONFIG
127.0.0.1 localhost:8080
::1 localhost
127.0.0.1 sb:8080
::1 sb
httpd-vhosts.conf file:
# Virtual Hosts
NameVirtualHost *.8080
<VirtualHost *:8080>
ServerName localhost
ServerAlias localhost
DocumentRoot "${INSTALL_DIR}/www/"
<Directory "${INSTALL_DIR}/www/">
Options +Indexes +Includes +FollowSymLinks +MultiViews
AllowOverride All
Require local
</Directory>
</VirtualHost>
<VirtualHost *:8080>
ServerName sb
DocumentRoot "d:/weby/sb/www/"
<Directory "d:/weby/sb/www/">
Options +Indexes +Includes +FollowSymLinks +MultiViews
AllowOverride All
Require local
</Directory>
</VirtualHost>