0x80073701 error while installing IIS features on Windows Server 2019

Question

Windows Server 2019 cannot install IIS features on Server Manager - Add Rolls and Features

Error
0x80073701
The Referenced assembly could not be found

Actions attempted but no lucks

1. "Specify alternate path"
   Tried to install from the DVD install media; E:\sources\sxs
2. Run from elevated CMD: "DISM /Online /Cleanup-Image /RestoreHealth /Source:E:\sources"

Others
microsoft-windows-netfx3-ondemand-package.cab was in the DVD media

Please kindly advise me if I can try something else other than re-installing the OS from scratch.

Regards,

Answer 1

Hi Alexandria,

I am Dave, I will help you with this.

I apologize, Community is just a consumer forum, due to the scope of your question (Server 2019) can you please post this question to our sister forum on Microsoft Q&A in the Server 2019 section (linked below)

Over there you will have access to a host of Server 2019 experts and will get a knowledgeable and quick answer to this question.

https://docs.microsoft.com/en-us/answers/topics...

Answer 2

Hello Alexandria Tilson,

The above error 0x80073701 can be resolved with the help of the built-in Windows Update Troubleshooter. You must follow the below fixes to resolve the error,

1. Run System File Checker
2. Run DISM Tool
3. Check Logs and Remove Patches

• Check for the Windows updates.
• Maybe the error 0x80073701 was triggered by some temporary server issues.
• Go back to the Settingsoption, select **Update,**and Security, and click on Windows Update.
• Press the Check for updates button, and try to update your Server again.
• If the problem still persists, then restartyour Server.

Run the Update Troubleshooter to encounter the issue:

• Navigate to Settings, and select the Update and Securityoption.
• Then on the left-hand panel, click on Troubleshoot option.
• Click on View additional troubleshooters.
• Locate and launch the Update troubleshooter.

Run System File Checker:

The error 0x80073701 might be caused due to a missing system file. So to resolve the issue, try System File Checker,

• Open the Command Promptwith Admin rights.
• Now**, typethe command given below,**
• Type sfc /scannowand press Enterto proceed further.
• **Note:**Don't close the command prompt windows until 100% complete message verification is done.
• Thus, when the process completes, you will be able to install IIS features on Windows Server and check whether the 0x80073701 error is resolved or not.

Run DISM Tool:

• Type cmd in the Windows Start Search box.
• Right-click on the Command Prompt and go with the option Runas administrator.
• Now, enter the belowcommand,
• dism /online /cleanup-image /startcomponentcleanup
• Nextly, restartyour computer to take effect and check if the issue is resolved and whether you can install IIS features on the windows server or not.

Check Logs and Remove Patches:

You will have to check the CBS.log and remove the patches in this method to resolve the error 0x80073701.

TheCBS.logis a file that includes logs about components when they get installed or uninstalled during updates.

The CBS.log file is located in the %windir%\Logs\CBS folder.

If you find any error, then re-install a particular file.

But, If there is no error in the CBS.log, you must execute the below command,

DISM /Online /Cleanup-Image /ScanHealth

This command can check for component store corruption. Hence when the command completes successfully, you will be able to install the IIS feature on your Windows Server.

I hope the above fixes help you resolve the error **0x80073701,**and you can install IIS features to your Server.

---

Regards,

Austin_M.