Interesting error code!
# as an HRESULT: Severity: SUCCESS (0), Facility: 0x4c5, Code 0xc807
# as an HRESULT: Severity: FAILURE (1), Facility: 0x7, Code 0x663
# for hex 0x663 / decimal 1635 :
# This patch package could not be opened. Verify that the
# patch package exists and that you can access it, or contact
# the application vendor to verify that this is a valid
# Windows Installer patch package.
# 1 matches found for "80070663"
Please download and install the System Update Readiness Tool, as given in the links by @richc46 above, and then please copy the C:\Windows\Logs\CBS folder to your Desktop, right click on it > Send to > Compressed (zipped) folder, and upload the new file which is created on your Desktop here.
Thanks a lot!