Requirements

The extension is currently supported only on the
following configurations:

Windows OS:

• Windows XP SP3 with IIS
  5.1 and » FastCGI Extension
• Windows Server 2003 with
  IIS 6.0 and » FastCGI Extension
• Windows Vista SP1 with
  IIS 7.0 and FastCGI Module
• Windows Server 2008 with
  IIS 7.0 and FastCGI Module
• Windows 7 with IIS 7.5
  and FastCGI Module
• Windows Server 2008 R2
  with IIS 7.5 and FastCGI Module

PHP:

• PHP 5.2.X,
  Non-thread-safe build
• PHP 5.3 X86,
  Non-thread-safe VC9 build

Note: The
WinCache Extension can only be used when IIS is configured to run
PHP via FastCGI.