0х80070643 error installing the Reader under Windows
0х80070643 - is a system error. It's necessary to fix the system settings.
There are two ways of fixing it up:
You should have .NET Framework v. 4.5 or later. Please use Microsoft Web Installer via the link: https://www.microsoft.com/en-US/download/details.aspx?id=48130 to automatically determine and download only the applicable components.
It's usually quite difficult to notice, that Firewall doesn't work. It's possible only if some applications don't work or via Services.
To start Firewall please follow this way Control Panel - Administrative tools - Services. Find Windows Firewall. Start it.
You can read more about this in the article provided by Microsoft: Turn Windows Defender Firewall on or off