If your are looking for a STABLE Squid version for Windows then please look at the 2.7 page instead. References : http://squid.acmeconsulting.it/Squid3.html http://blogbudaqdegil.blogspot.com/2013/02/eser-unlimited-power-bank.html

1. Squid 3 for Windows
Native port of Squid 3, with some Windows service enhancement.
WARNING: This is a development code with no guarantee of functionality or
performance.
If your are looking for a STABLE Squid version for Windows then please look at the 2.7 page
instead.
The development of Squid 3 for Windows (3.0 and 3.1 branches) is stopped
since the bazaar migration of the Squid 3 VCS because the
inability of Bazaar to handle correctly real multiplatforms development projects
.
This problem is known since 2005 to Bazaar Development Team at Canonical,
but still nothing was fixed.
Probably no STABLE Squid 3 binary packages will be available before the fix of
this problem, so please ask the Bazaar Team for the fix needed for the
resurrection of the Squid 3 for Windows development.
UPDATE: according to Canonical, starting from version 1.14, Bazaar should be
able to work correctly.
But this too long awaited fix to Bazaar is really coming too late to avoid
unrecoverable damages to Squid 3 development on Windows:
The Windows development is still stopped because the are too much Squid
new functionality totally out of sync or not implemented on Windows.

2. Squid 3 for Windows
Current features:
Based on Squid 3 development code
Run as a native Windows Service
Currently supported build environments:
Microsoft Visual Studio 2005 C++
MSYS + MinGW
Cygwin
Multiple Squid service instances are allowed
Full Command line support when running as a service
Automatic Service restart after Squid failure on Windows 2000/XP/2003
Use PSAPI.DLL for full getrusage() emulation
Internal DNS looks in registry for configured DNS, resolv.conf no more needed
Multithreaded support for standard Squid external helpers or redirectors (pinger, unlinkd,
dnsserver)
All squid -k switches (check, debug, interrupt, kill, parse, reconfigure, rotate, shutdown)
works
Basic, NTLM, Negotiate and Digest Authentication schema
Native Windows Basic, NTLM and Negotiate Authenticators with NTLMv2 and Kerberos
support
Cachemgr CGI interface supporting Microsoft IIS and Apache Web Server
SNMP
WinAIO and WinDiskThreads native async I/O
External ACL native group helper for Windows Domains group membership check
OpenSSL Support
ARP acl support
Currently supported Windows platforms:
 Windows 2000 Professional and Server
 Windows XP Professional (Home Edition not tested)
 Windows 2003 Server

3. Squid 3 for Windows
Licensing
Squid is licensed under the terms of the GNU General Public License.
Compiling source code:
 Microsoft build environment:
 Microsoft Visual Studio 2005 C++
 Microsoft latest Core SDK
 Native CVS, gawk, perl,sed and patch for NT
 MinGW environment:
 MSYS 1.0.9 or later
 MinGW 3.1.0 or later
 Windows API 2.4.0 or later
 MSYS Developer Tool Kit 1.0.1 or later
 How obtain the sources:
 Download the auto-generated daily tar.gz archive from Squid download Page
or
 Get with CVS the nt branch from devel.squid-cache.org
 Build using Microsoft Visual Studio:
 Check ASCII format of all project files, must be DOS (CR+LF)
 Check paths on all project files
 Verify the Squid options defined in autoconf.h
 Check default parameters on squid_mswin.mak file
 Check settings on Install files project
 Build using MinGW:
 From MSYS prompt run:./configure --prefix=c:/squid --enable-win32-service --enable-default-
hostsfile=none
make
 For other configure options see Squid FAQ


4. Squid 3 for Windows
Compatibility Notes:
It's recommended to use / char in Squid paths instead of
Paths with spaces (like C:Programs FilesSquid) are NOT supported by Squid
When using ACL like acl aclname acltype "file" the file must be in DOS text format (CR+LF) and the full
Windows path must be specified, for example:acl blocklist url_regex -i "c:/squid/etc/blocked1.txt"
The Windows equivalent of /dev/null is NUL
Squid doesn't know how to run external helpers based on scripts, like .bat, .cmd, .vbs, .pl, etc. So in
squid.conf the interpreter path must be always specified, for example:redirect_program
c:/perl/bin/perl.exe c:/squid/libexec/redir.pl
redirect_program c:/winnt/system32/cmd.exe /C c:/squid/libexec/redir.cmd
When Squid runs in command line mode, the launching user account must have administrative privilege on the
system
"Start parameters" in the Windows 2000/XP/2003 Service applet cannot be used
Known Limitations:
Squid features not operational:
DISKD: needs to be ported - Volunteers are welcome
WCCP: cannot work because GRE support on Windows is missing - Volunteers are welcome
Transparent Proxy: missing Windows non commercial interception driver
Some code sections can make blocking calls
Some external helpers may not work
File Descriptors number hard-limited to 2048
At this time Windows is a platform partially supported from Squid Community.
For general Squid configuration ask always on squid-users mailing list.
Commercial support will be available from Acme Consulting S.r.l. after the release of the first STABLE
version for Windows.
Squid for Windows BUG Reports
Original Port and some enhancements by Romeo Anghelache (see the ChangeLog)
Source :
http://squid.acmeconsulting.it/Squid3.html