MIDSERVER : SEVERE *** ERROR *** (34180)FileDBProviderImpl - Failed to clean the DB Cached files during MID startupDescriptionThe Midserver has failed the auto-upgrade with below error SEVERE *** ERROR *** (34180)FileDBProviderImpl - Failed to clean the DB Cached files during MID startupCauseMid server service account is not able to delete the files from agent/work/hr directory because of permission issueResolution Mid server logs shows below error in the logs 12/19/20 00:53:28 (393) Wrapper-Stopper SEVERE *** ERROR *** (34180)FileDBProviderImpl - Failed to clean the DB Cached files during MID startup12/19/20 00:53:28 (393) Wrapper-Stopper interrupting thread IdleConnectionMonitor.5This error is thrown when it's trying to delete files from agent\work\h2 and failsSo looks like user account which is used to run your mid server service does not have full admin rights on the agent folder . So it is not able to deleted filed from agent\work\hr directory. So to resolve this issue please check permissions of mid server service user account and ensure it has full admin rights on the agent folder.