SQL Server 2016 SP1 CU1 Install Fails I am trying to install CU1 for SQL Server 2016 SP1 on a clustered node and it fails with an error that I am not able to find information on. In the summary log file it has the following:


  Instance MSSQLSERVER overall summary:
  Final result:                  The patch installer has failed to update the shared features. To
  determine the reason for failure, review the log files.
  Exit code (Decimal):           -2146233079
  Exit facility code:            19 
  Exit error code:               5385
  Exit message:                  The given key was not present in the dictionary.
  Start time:         2017-02-14 10:02:56
  End time:                      2017-02-14
  10:03:18
  Requested action:              Patch


When I look in the detail log, I am not seeing anything that is helpful (at least to me). There are a lot of occurrences of these lines before the error,

"Sco: Attempting to..."
and 
"Skipping service control for the following instance because it has one or more clustered features: MSSQLSERVER"

I installed this CU to another cluster without any issues. The only difference between them, the one that it succeeded on was 2016 Standard with SP1, and the one that does not work is 2016 Developer with SP1.
The installer that I was initially using was SQL Server 2016 Developer with SP1. When I would try and apply CU1 for SP1 it was failing. I downloaded the SQL Server 2016 Developer RTM and installed it. I then applied SP1, rebooted and applied CU1 for SP1 and that worked. What I am not sure of is why there is a difference between the two scenarios.