AIR installation Fail, Win 8.1 x64

[2020-02-17:11:02:10] Runtime Installer begin with version 32.0.0.125 on Windows 10 x86
[2020-02-17:11:02:10] Commandline is:
[2020-02-17:11:02:10] No installed runtime detected
[2020-02-17:11:02:14] Relaunching with elevation
[2020-02-17:11:02:14] Launching subprocess with commandline c:\users\tomkee~1\appdata\local\temp\air9a4b.tmp\adobe air installer.exe -ei
[2020-02-17:11:02:17] Elevated install failed: returned error code -1
[2020-02-17:11:02:17] Exiting due to error: [ErrorEvent type="error" bubbles=false cancelable=false eventPhase=2 text="Launching elevated sub-installer failed" errorID=5100]

[2020-02-17:11:02:19] Runtime Installer end with exit code 7

This failure occurs on a supposedly clean machine where AIR was previously uninstalled.  There must be some conditions that are checked during an install that are not documented.  Please help.