Hi Edgar,
The error code 0x800700C1 occurs because the Windows Authenticode Signature Verification function now verifies portable executable (PE) files. We recommend that you perform an in-place upgrade of Windows 10. You may follow the on-screen instructions and watch the video in this Forum Article provided by PaulSey... on how to perform an in-place upgrade of Windows 10.
Let us know if in-place upgrade did the trick.