Created attachment 1263274 [details] Attachment for Horizon Error Description of problem: Version-Release number of selected component (if applicable): RHOSP 9 Additional info: From CLI Error message states that instance is locked and hence unable to start: # nova start vm-user1 Instance bf5ac469-6c50-43d8-aa09-7d6be59a8c2b is locked (HTTP 409) (Request-ID: req-50b222ba-4e2d-43a3-b9c8-74d04219a388) ERROR (CommandError): Unable to start the specified server(s). # Horizon just shows below error, which is quite confusing: Error: Unable to start instance: SG-EQ-N2A-01
*** This bug has been marked as a duplicate of bug 1432344 ***