Apple officially ending support for QuickTime for Windows
11 Years Since Initial Release
QuickTime 7.7.9 is still available for download through the Apple website, however users who wish to continue using the software do so at their own risk. According to Apple, "All current Windows web browsers support video without the need for browser plug-ins" which eliminates the need for QuickTime. The most recent security update released for QuickTime was January 7, 2016.
Since the January update, two critical vulnerabilities have been identified by Trend Micro. The security firm informed Apple in November of 2015, though at the time Apple said it had no plans to issue a patch. These vulnerabilities allow hackers to hijack QuickTime and inject malicious code and software onto your system, such as malware or viruses. It is recommended that any unnecessary installations of QuickTime be removed immediately. Here is a link to Apple's Official Removal Instructions
QuickTime Remains Supported on Mac
Users of Apple's Mac OS are not affected by this announcement. Apple has ceased only to update the Windows version of the product. This software will continue to be updated and Mac users have nothing to worry about.