title: Unable to do Windows update through batchpatch
body: <p>Unable to do the windows update through batch patch. When I tried to check for available updates, some instances are showing the error message as “Error 1601: Failed to retrieve WMI info. The RPC server is unavailable".</p>
  
  <p>I have tried the below troubleshooting steps for those instances which are showing error.
  1.       Windows Firewall – opened ports 135 and 445 
  2.       Checked the RPC service to see if it is running and set to automatic
  3.       If the instance is stopped, we have left it alone</p>
  
  <p>Followed this KB <a href="https://batchpatch.com/troubleshooting-common-errors-in-batchpatch" rel="nofollow">https://batchpatch.com/troubleshooting-common-errors-in-batchpatch</a> no luck. Anyone who has experience or idea what is wrong please guide me.</p>