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#11
As far as i know the Teaking tool does not repair Hash mismatches, or replace the CAT or MUM which are corrupt.
The tool i asked you to run should show where the corruption is.
MCT is the Media Creation Tool. -- The thumb drive you used to install this version,
Basically
Its a 2 in 1 install, the Fall update .15 and an INCLUSIVE update to .19, whats happened in your case .15 has installed with corruption and .19 is waiting to install.
Roy