So the same Windows Update error happens to all these three servers.
Could you please share more details about your environment? I'm suspecting it might be something on your network side. Have you made any changes in your environment? Such as changes to the firewall rules or proxy settings?
Here are a few more steps that you can try to troubleshoot the issue:
Try to run the command below from an elevated command prompt:
DISM.exe /Online /Cleanup-image /Restorehealth
Also, please try to reset the Windows Update components, and see if it helps:
https://support.microsoft.com/en-us/kb/971058
Regards,
Ethan Hua
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