Feature update to Windows 10, version 1709 fails to install

You've got some kind of abnormality, beerus_king - or it could be you need Windows version 10.0.16299 for it. The worst I can get at a Command Prompt is...

That will happen when the Prompt is not an administrator.

So - try:  BCDEdit  -enum  all

Then look carefully for the {badmemory} entry. Or, click the Prompt's icon in the header for its find box...

Edit: It's a good idea to backup the BCD before making changes to it...

MD  C:\BU //Create a BU folder on C:.

BCDEdit  /Export  "C:\BU\BCD Backup"       //Backup the BCD into the file "BCD Backup"..

                                                                         //The BU subfolder is auto-created, if necessary.

If necessary, it can be restored with:   BCDEdit /Import "C:\BU\BCD Backup"

Ah - nice...!...

Thanks! Will that get me out of prison too after I've done my taxes?

If you want to do it in PowerShell use the PowerShell command line escape string:

bcdedit  --%  /enum  {badmemory}

It will be the braces that need to be escaped because otherwise PowerShell will be looking at them as a possible "scriptblock"

Feature update Window 10 version 1709 failed to install.

I get that in PowerShell. Try it in a Command Prompt (Admin).

it is in administrator cmd