last night I have completed the installation of the Feature update and I have noticed that Defender Anti-Virus won't run. Here is a summary of everything attempted so far:
Went into services.msc to get the Windows Defender services all up and running and this where I have got the error message.
Completed a sfc /scannow no errors found.
Completed a DISM image health restore without resolving the issue.
Went into Registry to edit under Windows Defender the key DisableAntivirus which was set to 0. I have set it to 1 rebooted then set it again to 0 and so on and it has not resolved the issue.
I went into powershell to unload the Defender module unsuccessfully again.
Went into command prompt to find out if I could delete/reinstall the package but it's only possible to do so on Windows Server 2016.
Downloaded the minitoolbox to retrieve error codes and this is all I get:
Description: The Windows Defender Advanced Threat Protection Service service terminated unexpectedly. It has done this 2 time(s). The following corrective action will be taken in 60000 milliseconds: Restart the service.
Description: The Windows Defender Antivirus Service service failed to start due to the following error:
%%577 = Windows cannot verify the digital signature for this file. A recent hardware or software change might have installed a file that is signed incorrectly or damaged, or that might be malicious software from an unknown source.
Please find the output text file attached to this post.
Edited by JamesDavid, 15 December 2017 - 04:00 PM.