nope, I did that step. in fact, the update procedure in the docs is missing a critical step for windows service installation during the update…. you have to uninstall/install the windows service with the .bat file or copy over the xml file in the config and update the .jar file name to be the new version number. I had to figure that out on my own. You should update the docs.
So as it stands, my install is completely busted. can’t go backwards and can’t go forwards.
So you installed the correct driver and you’re still getting this error? Is it possible you also have a bad copy of the driver in PATH and the wrong one is being picked up?
so the link from 2025.5 sonarqube to ‘learn more’ about the update took me here… Installing database | SonarQube Server 2025.5 | Sonar Documentation it says to download (mssql-jdbc_auth-13.2.0.x64.dll) and copy to location in system path. which was already in my sonarqube folder so I just copied that same file to the updated sonarqube 2026.1 folder. but if you look at the documentation for 2026.1 (Installing database | SonarQube Server | Sonar Documentation), it says to use mssql-jdbc_auth-12.10.2.x64.dll. So now it seems to be getting past that error with mssql-jdbc_auth-12.10.2.x64.dll in the sonarqube folder (no PATH needed). I think it just comes down to the update link from sonarqube should point to the correct documentation…