Answered
Latest version of flashplayer isn't working well.
I'm facing with this problem when I try to play HaxBall. I tried all browsers I have (Opera,Firefox,Edge,Chrome). Thanks already now for answers.
Most browser's disable Flash by default and force user's to enable it, usually on a per site basis.
Assuming you have Flash Player installed for the various browsers (see below) if the site is coded correctly, if you click on the 'Get Adobe Flash Player' button link the browser will intercept it and display the pop-up window to enable Flash. This is actually what happened when I went to using Chrome:
- Chrome uses the Flash Player PPAPI plugin and Google embeds it in the browser, no need to install it separately.
- To troubleshoot Flash Player in Chrome, see Use or fix Flash audio & video - Computer - Google Chrome Help
- Edge uses the Flash Player ActiveX Control and Microsoft embeds it in the browser, there is no separate Flash Player version to install
- To troubleshoot Flash Player in Edge, see Adobe Flash Player issues with Windows 10 (Microsoft Edge)
- Firefox uses the Flash Player NPAPI plugin, which is installed manually by the user
- To troubleshoot Flash Player in Firefox, see Why do I have to click to activate plugins? | Firefox Help
- Opera uses the Flash Player PPAPI plugin, which is manually installed by the user
- To troubleshoot Flash Player in Opera, see Enable Flash Player for Opera
<edit>
Had wrong link for Google's support document, updated with the correct link
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