Illustrator CC 2019 Installation Fails, error code: 145
I tried updating Illustrator with the Creative Cloud app but it failed with a terse error message:

Clicking on "More Information" says that "WARN: Target directory already exists: 'C:\Program Files\Adobe\Adobe Illustrator CC 2019\Support Files\Contents\Windows'". I tried deleting the directory but it seems to be corrupted in a way that Windows won't let me do so (even with Admin privilege). An attempt to rename the directory also results in the same problem. I tried uninstalling the app via the Windows control panel but that didn't work either.
Can anyone suggest how I can resolve this problem and install the latest Illustrator (I have the proper Creative Cloud subscription).
Thanks.
{Renamed by MOD}
