It took ten years and was settled by a memo about batteries
Adobe Set the Date on 25 July 2017 and Named the Partners Who Asked Them To
The blog post listed five companies. The phrasing was deliberate.
The Announcement and Its Architecture
On 25 July 2017, Adobe published a post to its blog under the title "Flash & The Future of Interactive Content," confirming that Flash Player would reach end-of-life at the close of 2020. The company pledged to continue security updates until that date, then stop distribution and block Flash content from running entirely. The kill switch that executed that block activated on 12 January 2021, twelve days after the nominal deadline.
What made the announcement structurally unusual was its opening paragraph. Adobe did not frame the decision as its own conclusion. Instead, it named five industry partners — Apple, Facebook, Google, Microsoft, and Mozilla — and attributed the timeline to collaborative planning with them. Each company was listed without elaboration, the implication being that the decision was not unilateral but a coordinated industry position. Adobe's own role was cast as facilitator of an orderly wind-down rather than author of a termination.
The language carried weight because the same companies had spent years eroding Flash's position through separate, uncoordinated-looking actions. Apple had excluded Flash from iOS since the iPhone's launch in 2007 and Steve Jobs had published his objections explicitly in April 2010. Google had moved Flash to click-to-play in Chrome by 2015 and was shipping HTML5 video defaults across YouTube. Mozilla had restricted the NPAPI plug-in architecture that Flash depended on. Microsoft was preparing Edge without plug-in support. Facebook had been pushing game developers toward HTML5 alternatives. By naming all five in a single sentence, Adobe converted a sequence of independent market pressures into something that looked like a joint resolution.
Also in The Argument
Steve Jobs Published 'Thoughts on Flash' on 29 April 2010 and Framed the Argument for Everyone Who Followed
Chrome's Click-to-Play Default in 2015 Was Quieter Than Jobs's Letter and More Final
The announcement also named the formats and technologies expected to succeed Flash: HTML5, WebGL, and WebAssembly. These were not speculative — all three were already handling the use cases, from video playback to browser-based game delivery, that Flash had dominated through the mid-2000s. Adobe's own timeline through 2020 was positioned as a runway for developers and enterprises still running Flash-dependent content to migrate.
What the announcement did not address was the archival problem: the hundreds of thousands of SWF files that would become inaccessible once the player stopped running. That problem fell, eventually, to projects like Flashpoint and the Internet Archive's Ruffle integration, neither of which existed in July 2017. Adobe named its partners for the shutdown. It named no partners for what would be left behind.