Summary: This article discusses using TF902 as a quick workaround to bring up your SQL Server service if it fails to be started due to post upgrade script failure after installing SQL Server patch. Further troubleshooting steps to address the post upgrade script failure have been discussed in later part of this article.
Please be noted that it is not suggested to keep your SQL Server service in this state for long since your SQL Server is in an incomplete patch installation status and considered instable for your production environment. This is because part of your SQL DLL files, MSP