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 of Windows Vista, released to beta testers on 2005-12-19.

This build renamed Windows Antispyware to Windows Defender and had minor UI changes.

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