Windows Vista build 5270

Windows Vista build 5270 is a pre-Beta 2 build of Windows Vista. This build is the official December 2005 Community Technology Preview, released to beta testers on 19 December 2005.

It renamed Windows AntiSpyware to Windows Defender and updated its UI.

The Starter SKU of this build has the "Windows Starter 2007" watermark instead of "Windows Vista Beta 2".

It is the last build to include the "Professional Standard, "Professional Standard N" and the "Professional Enterprise" SKUs. They were replaced by build 5308 with the "Business", "Business (N)" and the "Enterprise" SKUs respectively.

This build is the first to include a new app called "Windows Collaboration" which is later known as Windows Meeting Space.