FSF anti-Windows campaigning is an event series targeted against a Windows line of Microsoft's operating systems.
BadVista was a campaign by the Free Software Foundation to oppose adoption of Microsoft Windows Vista and promote free software alternatives. A follow-up to the Defective by Design campaign against digital rights management technologies, it aimed to encourage the media to make free software part of their agenda.  The campaign lasted from December 2006 to January 2009.
The campaign was initiated on December 15, 2006 with aims to expose what it views as the harms inflicted on computer users by Microsoft Windows Vista and its embedded digital rights management, as well as providing a user-friendly gateway to free software alternatives.  
BadVista activists teamed up with Defective by Design members on a Vista launch party on January 30, 2007 at the Times Square. Protesters in hazmat suits held their signs explaining the restrictions Vista may impose on computer users.     The campaign ended on January 8, 2009, when "victory" was declared after Microsoft released its Windows 7 Beta.  This victory claim was based on the tepid adoption of Vista, compared to those sticking with the less-DRM infused Windows XP or moving to the FSF-defined less restrictive Mac OS X or entirely free GNU/Linux or FreeBSD.
Later Free Software Foundation campaigns
Windows 7 Sins
In 2009, a campaign targeted towards Windows 7 was launched by the Free Software Foundation under the name "Windows 7 Sins". The campaign's site uses graphics from the free software video game XBill.
Upgrade from Windows 8
- Defective by Design - an associated anti-digital rights management campaign that also targets Windows Vista
- Hardware restrictions
- "Looking into the FSF's BadVista campaign". linuxjournal.com. Archived from the original on 18 August 2007. Retrieved 2007-08-11.
- John Sullivan. "BadVista.org: FSF launches campaign against Microsoft Vista". Archived from the original on 7 August 2007. Retrieved 2007-08-11.
- "Defective by Design pickets Vista launch in NYC". boingboing.net. January 29, 2007. Archived from the original on 14 June 2009. Retrieved 2009-06-09.
- John Sullivan (January 30, 2007). "A BadVista at Microsoft's New York launch parties". BadVista.org. Archived from the original on 9 January 2008. Retrieved 2008-01-12.
- "Are you being naughty Microsoft? - Bad Vista Accounting". zedomax.com. Sunday, May 25, 2008. Retrieved 2009-06-09.
- "הושקה 'ויסטה'. וואו.". linmagazine.co.il. 2007-01-30. Retrieved 2009-06-09.
- BadVista.org team. "BadVista: We hardly knew ye". Archived from the original on 1 February 2009. Retrieved 2009-01-10.
- Free software group attacks Windows 7 'sins' COMPUTERWORLD, August 26, 2009
- Microsoft Windows 8 Legacy: An Unacceptable Level of Risk Linux Advocates, May 02, 2013
- badvista.fsf.org - Official "BadVista" website
- en.windows7sins.org - official "Windows 7 sins" website
- www.upgradefromwindows8.com - official "Upgrade from Windows 8" website