Sharepoint 2013 Sept CU failed

Question

I applied the Sept CU on all my machines, I have about 12 machines. It worked on all of them but failed on two. All the machines have the same setting and are all identical.

So after I apply the CU, the configuration wizard keeps failing. What could be the issue?

Answer 1

What are the roles of the two failing servers? If search isn't stopped before the Wizard is run, it can fail. Typically running it a second time after failure will work in that case.