Old School Gamers Bid Goodbye as Adobe Flash Shuts Down With 2020 FOLLOW US ON: 2020 saw a lot of good things end, and Adobe Flash was one of them. Adobe had scheduled the end of support for its famous Flash software on December 31st, 2020. While Adobe won’t start blocking Flash content until January 12th, major browsers will shut it all down tomorrow and Microsoft will block it in most versions of Windows. Flash, however, more than practical had been a cultural symbol: Early 2000's games played online needed flash to run, and with the end of flash, it means the end of the 'good old times' on the Internet.