Error 0x80073701 on KB5060526 Instalaltion

We also get the same error. When we try to install .NET Framework 3.5 with DISM or without we are getting an error. VM is located in Azure Cloud

Also running the commands ISM.exe /Online /Cleanup-image /Restorehealth and sfc /scannow didn't help any ideas how to fix the problem?

Hi Capiteq Support,

You're encountering error 0x80073701 while installing KB5060526. This error means a required system component is missing or corrupted.

I managed to find a couple of steps that might help you:

1. Repair the System files

Try running the following commands in an elevated Command Prompt (Run as Administrator):

DISM /Online /Cleanup-Image /RestoreHealth
sfc /scannow

These tools scan and repair corrupted system files and the Windows component store.

2. Install .NET Framework 3.5 via DISM

Some updates rely on .NET Framework 3.5 components. Installing it manually can help resolve missing assembly errors like 0x80073701.

If you have access to a Windows Server 2022 ISO, mount it and run:

 DISM /Online /Enable-Feature /FeatureName:NetFx3 /All /LimitAccess /Source:X:\sources\sxs

Replace X: with the drive letter of your mounted ISO. You can download the ISO from the Microsoft Evaluation Center.

If you are using Windows Server 2019, you can dowload it here:

• https://www.microsoft.com/en-us/evalcenter/download-windows-server-2019?msockid=1a3f489345c3613322305e8c41c36361

For more details on this method, Microsoft provides a helpful guide here:

• https://learn.microsoft.com/en-us/windows-hardware/manufacture/desktop/deploy-net-framework-35-by-using-deployment-image-servicing-and-management--dism?view=windows-11

Also make sure the update is installed just like Sudheer Reddy mentioned:

• https://www.catalog.update.microsoft.com/Search.aspx?q=KB5060526

If the issue continues, feel free to share any relevant entries from the CBS logs (C:\Windows\Logs\CBS\CBS.log) and I’ll be happy to help further.