These “Update Flash Player” or “Update Java” notifications are not created by the developers of Adobe Flash Player or Java, instead the pop-ups are used by cyber criminals to distribute adware and browser hijackers.
The vendor says that Ad-Aware detects hazardous content on a user's computer, identifies the threat level, and then gives the user the ability to block or remove unwanted content.
The fake update Flash Player or Java link may install on your computer potentially unwanted programs like: toolbars (Sweet-Page Toolbar, Delta Toolbar, Trovi Search), adware (Web Cake, Enhance Tronic, Coupon Buddy) or other forms of malware.
When infected with this malicious program, other common symptoms include: You should always pay attention when installing software because often, a software installer includes optional installs, such as this “Update Flash Player” or “Update Java” adware. Always opt for the custom installation and deselect anything that is not familiar, especially optional software that you never wanted to download and install in the first place.
If your issue has begun since upgrading to Windows 10, or installing a new update for Windows 10, see here.
— The Spybot updater can fail from time to time on its 1st attempt to download the latest updates.