Error code 0x80070643 normally means that the machine needs to be restarted because another install has not yet completed. This normally happens after Windows Updates have been run but the machine was not rebooted.
Please restart your computer and try again.
I would also recommend that you download the latest version of Visual COBOL V2.3 as this is the only version that has actually been tested and certified to run under Windows 10.
Thanks.