Thanks tomasc for the suggestions from the Media Suite side of the problem. Ransomware monitored folder is turned off. From second thread, not sure if it is relevant but no product key was ever asked for during download from disc. The rest of the discussion seems only to apply to Pioneer hardware.
You may be right that issue could be resolved by simply finding the right "switch" to deactivate. And to do that would likely require some competent, responsible feedback from Cyberlink. Here are the individual responses/requests for info I've gotten so far from Cyberlink, in order. They've been edited down for brevity.
1. Link with troubleshooting tips. --??
2. Uninstall and restart. If concern remains please provide full page screen shot of all installed programs; and run DxDiag.exe and provide results in text file. --Radford
3. Please provide: Invoice or the Proof of Purchase(PoP), indicating the name, version and edition of the software and the complete product key; Photo of the disc with the software information. --Jet
4. The bundled(OEM) version that you have is exclusively customized by the hardware vendor's LG request and specification. The product compatibility and license are different from CyberLink retail/paid version product. We suggest to contact the hardware manufacturer directly for further assistance. --Jet
5. Please provide a short video using your mobile device camera wherein show the reproduced steps in trying to sign in while entering your email address and password for further checking. --Vince
6. Please be advised upon further checking on the information that you have provided, we are able to see that the operating system of your computer is Windows 10. Please be advised that the CyberLink Media Suite 10 is an outdated version and it can only be installed on Microsoft Windows 7, Vista, and XP. --Jet
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Let me just say that when in 5 they asked for a video of me signing in I said no, as at that point I was getting fed up, and their request seemed ludicrous. Plus, by asking for a video they were implying that I was lying about the issue. I instead suggested that maybe they should admit that they have a bug in their software. I got 6 in response.
As you can see at no time have they offered any
SUPPORT, except to suggest I reinstall their program, something I'd already tried myself.