We've recently completed upgrading all of our workstations to Windows 7. Ever since then we cannot scan the vast majority of the workstations (a few will). The error we are getting is:

 

FAILURE :Connection to RPC server in the workstation failed.

 

Now, we've spent about 14 hours, collectively, trying to fix or isolate the issue and we still can't. We've gone through every ManageEngine document and made all the changes that are suggested. We've done packet captures to isolate what the failing protocol is and we're still stuck.

 

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