[SOLVED] Windows Server 2016 - Cannot install Windows Defender Role - Error 0x80073701

[hdh33]

Appears to be the same issue as this. I've been racking my brain for a couple of days. Only server we have that is having the issue.

Tried to install with the below, but continue to get an error.

Dism /Online /Enable-Feature /FeatureName:Windows-Defender
Dism /Online /Enable-Feature /FeatureName:Windows-Defender-Gui

Error: 14081

The referenced assembly could not be found.
CBS.log appears to reference KB4284880 as missing. Trying to add that KB fails with it is not applicable.

dism /Online /Add-package /packagepath:C:\Temp\KB\Windows10.0-KB4284880-x64_Delta.cab

Error: 0x800f081e

The specified package is not applicable to this image.
Tried running the below with no issues found.

• DISM /Online /Cleanup-Image /ScanHealth
• DISM /Online /Cleanup-Image /RestoreHealth
• DISM /Online /Cleanup-Image /RestoreHealth /Source:J:\Sources\install.wim - Against mounted ISO.
• SFC /scannow

Any ideas are appreciated.

 

[Maxstar]

Hi and welcome to Sysnative,

Follow these instructions to remove an update.

• Open the Start menu of Windows and type the command CMD
• When you see Command Prompt on the list, right-click on it and select Run as administrator.
• When command prompt opens, copy and paste the following command into it, then press enter.

wusa /uninstall /KB:284880

• Let me know if it says it was successful or you get the message: The update KB284880 is not installed on this computer.

 

[hdh33]

Got the message: The update KB284880 is not installed on this computer.

 

[Maxstar]

Oops, please run the following command again because I miscopied the KB number.

wusa /uninstall /KB:4284880

 

[hdh33]

Received the same not installed on this computer message.

 

[Maxstar]

Download the

Farbar Recovery Scan Tool and save it to your Desktop:

Download the 64 bit version: - Farbar Recovery Scan Tool Link

• Open the startmenu and type the command cmd.
• After you find the Command Prompt, right click on it and select Run as Administrator.
• Copy and paste the following into the Command Prompt and press enter.

reg load HKLM\COMPONENTS C:\WINDOWS\SYSTEM32\CONFIG\COMPONENTS

Right-click on the file FRST64.exe and choose Run as administrator.

• Copy and paste the following (code) into the Search box and click the Search Registry button.

KB4284880

• When the scan is complete, a message will display that SearchReg.txt is saved in the same folder FRST was started from.
• Post the logfile SearchReg.txt as attachment in your next reply.

 

[hdh33]

Output attached.

 

[Maxstar]

Start the

Farbar Recovery Scan Tool again.

Warning: This script was written specifically for this system. Do not run this script on another system.

• Download the attachment fixlist.txt and save it to your desktop.
• Right-click on FRST.exe and select "Run as administrator".
• Press the Fix button.
• If for some reason the tool needs a restart, please make sure you let the system restart normally.
• When finished, a log called Fixlog.txt will appear in the same directory the tool is run from.
• Post the logfile Fixlog.txt as attachment in your next reply.

 

[hdh33]

Fixlog attached.

 

[Maxstar]

Please try to the Windows Defender feature and let me know the result. If it fails attach a new copy of the CBS logs.

 

[hdh33]

That did it! Defender and Defender-GUI feature installed. Able to onboard to Defender for Endpoint successfully. Wonder what happened to cause that KB to get messed up in the registry?

Thank you so much for your help. Have a good weekend!

 

[Maxstar]

You're welcome. Glad to hear the problem has been resolved, have a nice weekend too!...