Uninstalling the earlier version

In this task, you uninstall IBM MQ using the Windows control panel. The queue manager data is not removed as part of the uninstallation process, which means that the sample queue managers used in this scenario are retained and can be detected when you install the newer version of the product.

Whether or not you have to uninstall the earlier version of the product before you install the later version depends upon your operating system. On Windows systems, uninstalling is optional and you could alternatively install the newer version without uninstalling the earlier one. Note that in this case, some of the options and messages that you would see during the installation would be different from those that appear when you have uninstalled the earlier version first. For more information about the platforms on which you must uninstall the earlier version before installing the newer version, see Migrating on AIX® and Linux®: single-stage.