At least for the 0x800c0006 in WLXSuiteLang it’s because you have more than the English language installed in Windows and the Essentials installer tries to pull the language files from Microsoft’s download server, and the files no longer exist.
To workaround that, disable your network adapter (ie. run ncpa.cpl, right-click on the connection and choose to Disable), run the setup, and after it’s complete, you can go back and re-enable the connection.
For the other, if it didn’t get resolved by the above, you’ll probably need to take a look at the log file. You’ll find the logs in %programdata%\Microsoft\WLSetup\Logs.