Step-by-step guide for those having troubles with installing and activating Office 2019:
1) Mount ProPlus2019.en-US disc image file.
2) Go to the mounted image and start Office/Setup64.exe (this is to make sure the setup will install the 64-bit Office, cos the main Setup.exe does NOT ask, and for me it autopicked the wrong 32-bit version).
3) When the install finishes, right click to Run as Administrator the Convert-C2R.cmd from the archived C2R-R2V_5 folder, a blue shell window will open and do it's job for about 20 seconds (if the command prompt only flashes, move the folder to the directory where you installed Office).
4) Do NOT run the KMS-VL-ALL Medicines because it will also rewrite your Windows activation for which the best tool is
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. Instead download
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and run OInstall.exe. There under the Utilities tab, tick the checkboxes "Online KMS" and "Office reactivation task" then click the "Activate Office" button (if you get a prompt by Windows Firewall click on "Allow access"; this method will only add activation for Office and not touch Windows in any way).
Windows Defender and internet can be ON, since they do not affect the installation.
P.S.: if moderators want, can clean up the above posts of mine regarding trying to solve this issue.