The fake update Flash Player or Java pop-up ads are caused by an ad-supported extension for Internet Explorer, Firefox and Chrome, which is distributed through various monetization platforms during installation.This malicious browser extensions is typically added when you install another free software (video recording, download-managers or PDF creators) that had bundled into their installation this adware program.
If you’re having problems with Firefox, resetting it can help.
The reset feature fixes many issues by restoring Firefox to its factory default state while saving your essential information like bookmarks, passwords, web form auto-fill information, browsing history and open tabs. If the reset didn’t fix your problem you can restore some of the information not saved by copying files to the new profile that was created.
When this malicious extension is installed, when you will browse the Internet, an ad with a fake request to update Adobe Flash Player or Java will randomly pop-up.
The malicious web pagewill display a pop-up box stating that you need to updated or install Flash Player or Java to view a video.
If you are still experiencing problems while trying to remove “Update Flash Player” or “Update Java” redirect from your computer, please ask for help in our Malware Removal Assistance forum.
The Adobe Flash Player browser plugin lets you view video and animated content in Firefox.
Click on the "Activate Adobe Flash" message to allow the Flash content to load (if it doesn't, reload the page and try again).
For more information, see the articles Set Adobe Flash to "click to play" on Firefox and Why do I have to click to activate plugins?
Resetting your browser settings will reset the unwanted changes caused by installing other programmes.
However, your saved bookmarks and passwords will not be cleared or changed.
If you want Flash to work in Firefox you must install the plugin version, as explained above.