vhd file) and displays the following error message:File: \Windows\system32\winload. Under File signature verification, click the option that best supports your IT departments security policies. or Windows did not find a Microsoft signature associated with the software package you want to install. Things I have tried: Boot to safe mode with no luck. I do not have the Windows installation disc and cannot start in safe mode. The instructions below describe how to check a digital signature manually on an installer file. sys* More Less Apple Footer This site contains user submitted content, comments and opinions and is for informational purposes only. (Code 52) Top The installer is an EXE or MSI file on Windows, an RPM file on Linux operating systems (Amazon, CloudLinux, Oracle, Red Hat, and SUSE), or a DEB file on Debian and Ubuntu. Windows cannot verify the digital signature for this file webroot Authenticity The signer is confirmed as the signer.