[SOLVED] Unable to Install-WindowsFeature Windows-Defender: The referenced assembly could not be found. Error: 0x80073701

Da_Jester · Jul 25, 2024

Hello Sysnative team, hope all is well with everyone.
We have a 2016 DataCenter running into an issue when trying to install Defender either via PS or Add-role.

Please see attachment and thank you in advance.

Da_Jester · Jul 31, 2024

Anyone here to help and or assist?

Maxstar · Aug 1, 2024

Hi and welcome to Sysnative,

Step 1. Download

SFCFix and save it to your desktop.

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

Save any work you have open, and close all programs.
Download the attachment SFCFix.zip and save it to your desktop.
Drag the SFCFix.zip file over the SFCFix.exe executable and release it.

SFCFix will launch, let it complete.
Once done, a file will appear on your desktop, called SFCFix.txt.
Post the logfile (SFCFix.txt) as attachment in your next reply.

Step 2. Run the following DISM command and post the result. If it fails attach a new copy of the CBS log.

Code:

DISM /online /cleanup-image /RestoreHealth

Da_Jester · Aug 1, 2024

Hello Maxstar,
Hope all is well with you.
Please see attachment per request.

Maxstar · Aug 2, 2024

Hi,

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.

Code:

wusa /uninstall /KB:4534307

Let me know if it says it was successful or you get the message: The update KB4534307 is not installed on this computer.

Da_Jester · Aug 5, 2024

Hello Maxstar,

Prompt shows "The update KB4534307 is not installed on this computer".

Maxstar · Aug 6, 2024

Hi,

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.

Code:

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.

Code:

KB4534307

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.

Da_Jester · Aug 6, 2024

Hello Maxstar,

Please see attachment per your request.

Maxstar · Aug 7, 2024

Hi,

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.

Afterwards try to install the Windows Defender feature. If it fails attach a new copy of the CBS logs.

Da_Jester · Aug 7, 2024

Hello Maxstar,

Success!!!! Thank you so much!
Are you able to share details as to why this error/issue showed up?

Maxstar · Aug 7, 2024

Hi,

You're welcome. And the issue was an old update (KB4534307) which was partilly removed from the system.

Search

Search

[SOLVED] Unable to Install-WindowsFeature Windows-Defender: The referenced assembly could not be found. Error: 0x80073701

Da_Jester

Member

Attachments

Da_Jester

Member

Maxstar

Windows Update Moderator, Security Analyst

Attachments

Da_Jester

Member

Attachments

Maxstar

Windows Update Moderator, Security Analyst

Da_Jester

Member

Maxstar

Windows Update Moderator, Security Analyst

Da_Jester

Member

Attachments

Maxstar

Windows Update Moderator, Security Analyst

Attachments

Da_Jester

Member

Maxstar

Windows Update Moderator, Security Analyst