Adobe Acrobat Reader DC update fails – a newer version is already installed

C:\ProgramData\Adobe\Setup\{***}\

Run AcroRead

Once installed check for updates from within Adobe Reader again.

Source: Adobe Forums

Youtube video black, flash video not working after uninstall of McAfee software

Youtube video black box, flash video not working after uninstall of McAfee software.

Run MCPR to totally remove McAfee software:
https://service.mcafee.com/FAQDocument.aspx?id=TS101331

Completely uninstall Adobe Flash Player – Windows

To completely uninstall Flash Player, download the uninstaller and follow the supplementary steps here: adobe.com

Source: Adobe.com

Adobe Offline Installers for Flash and Reader

Adobe Flash Offline Installer
Flash Player for ActiveX (Internet Explorer)

Flash Player Plug-in (All other browsers)

Adobe Reader Offline Installers
Download Adobe Reader

Source – Adobe.com