Access Wamp 3.1 from PC in local network - php

Question

I know there have been a lot of questions regarding this topic, but I still was not able to get it to work.
I've set up a Wordpress site and a virtual host for that site locally on my notebook (via Wamp 3.1) and now I want to access it from another PC on the same network. On the localhost everything works fine.
My httpd-vhosts.conf file looks like this:
# Virtual Hosts
#
#Wamp
<VirtualHost *:80>
ServerName localhost
ServerAlias localhost
DocumentRoot "${INSTALL_DIR}/www"
<Directory "${INSTALL_DIR}/www/">
Options +Indexes +Includes +FollowSymLinks +MultiViews
AllowOverride All
Require local
</Directory>
</VirtualHost>
#Hp1
<VirtualHost *:80>
ServerName hp1.local
DocumentRoot "d:/wamp64/www/hp1"
<Directory "d:/wamp64/www/hp1">
Options +Indexes +Includes +FollowSymLinks +MultiViews
AllowOverride All
Require local
Require ip 192.168.100.76
</Directory>
</VirtualHost>
I've added 192.168.100.88 hp1.local (the ip of notebook) to my PC's host file. 192.168.100.76 is the ip of my PC.
I can ping my PC from my notebook and vice versa.
I've tried to access the site via
http://192.168.100.88
and
http://hp1.local
But to no avail. Not even a 403 or anything, just
Error: network timeout
Edit:
Thinks I've tried:
Put an inbound rule for port 80 in place (on my PC)
Deactivated the firewall (on my PC)
Added Apaches httpd.exe to my hosts firewall exceptions (solution)

Answer 1

Windows Firewall is likely blocking incoming connections from Apache. Add an exception for Wamp's incoming traffic (or just turn it off, but doing so would be bad for security).