networking - Can't access 127.0.0.1 from Windows 8.1 - Super User

i have strange problem windows 8.1 pro laptop: i can't access 127.0.0.1 web browser. wait, gets weirder!

the setup

my os has installed (among others) following programs:

• xampp server apache, php , mysql servers running @ usual ports (80, 443 , 3306)
• spotify
• jdownloader 2

just make sure i've read other questions topic, here related aspects:

• i'm quite sure not malware
• my hosts file default 1 came windows
• in dialog "local area network (lan) settings" have checked "automatically detect settings"
• both ipv4/ipv6 protocols have configuration:

the problem

although can access local web server http://localhost/, visiting http://127.0.0.1/ google chrome returns err_network_access_denied. doesn't work on ie or firefox either.

the real deal here can access local web server http://192.168.1.xxx/ (whatever local ip address has machine).

so, spotify , jdownloader?

grad asked! here's why i'm worried problem: this affects other programs in computer.

for didn't know, spotify has built-in web server allows play songs web (more info @ https://stackoverflow.com/questions/7580175/what-is-the-advantage-of-having-a-domain-name-spotilocal-that-resolves-to-127). playing around awesome feature, realized didn't work in computer:

^{(click image enlarge)}

as can see, calls spotilocal.com (which 127.0.0.1) being denied.

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another example jdownloader 2, has built-in web server (https://support.jdownloader.org/knowledgebase/article/view/42/0/jd-opens-my-browser-to-display-captchas).

whenever jdownloader needs user solve captcha, opens url in default browser: http://127.0.0.1:24613/xxxxxxx/?id=xxxxxxxxxxxx

of course, err_network_access_denied.

any appreciated. in advance!

edit

in response things forgot mention:

• ping 127.0.0.1 works fine:
• i can access xampp http://[::1]/, not spotify or jdownloader (from respective ports)
• in xampp's "httpd.conf", listen line listen 80 , servername servername localhost:80
• i have kaspersky internet security 2016 installed, problem persists when turn off

given recent edit, change servername localhost:80 servername *:80 apache.

what @ request coming in server name, , sees respond requests going localhost (not 127.0.0.1) on port 80. want listen on any interface or ip address system has, , server website on port 80.

yes, localhost should resolve 127.0.0.1, if that's not request is, need match somewhere. currently, there's no match. using *:80 means requests not matched earlier go configuration stanza.