Win 10 x64 AIR will not install or update Error 5100

Problem will not install.  Install log:

[2016-01-10:17:31:47] Runtime Installer begin with version 20.0.0.233 on Windows 10 x86

[2016-01-10:17:31:47] Commandline is:

[2016-01-10:17:31:47] No installed runtime detected

[2016-01-10:17:31:55] Relaunching with elevation

[2016-01-10:17:31:55] Launching subprocess with commandline c:\users\mtreloar\appdata\local\temp\aire805.tmp\adobe air installer.exe -ei

[2016-01-10:17:31:56] Runtime Installer begin with version 20.0.0.233 on Windows 10 x86

[2016-01-10:17:31:56] Commandline is:

[2016-01-10:17:31:56] No installed runtime detected

[2016-01-10:17:31:59] Runtime Installer end with exit code 6

[2016-01-10:17:31:59] Elevated install failed: returned error code -1

[2016-01-10:17:31:59] Exiting due to error: [ErrorEvent type="error" bubbles=false cancelable=false eventPhase=2 text="Launching elevated sub-installer failed" errorID=5100]

[2016-01-10:17:32:02] Runtime Installer end with exit code 7