MySQL Installer for Windows •Category: All Software (default), MySQL Servers, Applications, MySQL Connectors, or Documentation (for samples and documentation). •Maturity: Current Bundle (appears initially with the full package only), Pre-Release, Current GA, or Other Releases. If you see a warning, confirm that you have the most recent product manifest by clicking Catalog  on the MySQL Installer dashboard. If MySQL Installer is unable to download the manifest, the range of products you see is limited to bundled products, standalone product MSIs located in the Product Cache  folder already, or both. •Already Downloaded (the check box is deselected by default). Permits you to view and manage downloaded products only. •Architecture: Any (default), 32-bit, or 64-bit. •MySQL Installer does not permit server upgrades between major release versions or minor release versions, but does permit upgrades within a release series, such as an upgrade from 5.7.18 to 5.7.19. •Upgrades between milestone releases (or from a milestone release to a GA release) are not supported. Significant development changes take place in milestone releases and you may encounter compatibility issues or problems starting the server. •For upgrades to MySQL 8.0.16 server and higher, a check box enables you to skip the upgrade check and process for system tables, while checking and processing data dictionary tables normally. MySQL Installer does not prompt you with the check box when the previous server upgrade was skipped or when the server was configured as a sandbox InnoDB Cluster. This behavior represents a change in how MySQL Server performs an upgrade (see Section 2.11.3, “What the MySQL Upgrade Process Upgrades” ) and it alters the sequence of steps that MySQL Installer applies to the configuration process. 1. Click  Upgrade . Confirm that the check box next to product name in the  Upgradeable Products  pane has a check mark. Deselect the products that you do not intend to upgrade at this time. 137 To choose a new server version: If you select  Skip system tables upgrade check and process. (Not recommended) , MySQL Installer starts the upgraded server with the  --upgrade=MINIMAL  server option, which upgrades the data dictionary only. If you stop and then restart the server without the  --upgrade=MINIMAL  option, the server upgrades the system tables automatically, if needed. The following information appears in the  Log  tab and log file after the upgrade configuration (with system tables skipped) is complete: WARNING: The system tables upgrade was skipped after upgrading MySQL Server. The  server will be started now with the --upgrade=MINIMAL option, but then each  time the server is started it will attempt to upgrade the system tables, unless  you modify the Windows service (command line) to add --upgrade=MINIMAL to bypass  the upgrade. FOR THE BEST RESULTS: Run mysqld.exe --upgrade=FORCE on the command line to upgrade the system tables manually. Upgrading MySQL Server Note The Commercial release of MySQL Installer does not display any MySQL products when you select the Pre-Release maturity filter. Products in development are available from the Community release of MySQL Installer only. Important server upgrade conditions: