[ https://issues.jboss.org/browse/JBDS-4007?page=com.atlassian.jira.plugin.... ] Alex Kashchenko commented on JBDS-4007: --------------------------------------- I am confirming, that for 8u91 and 8u101 the described logic is the expected one. MSI upgrade feature was not included for them so each release was a "different non-upgradeable version of the same product". Upgrade feature was included starting from 8u102-1 release, current logic is the following: 1) 8u101 installed: - later versions can be installed, 8u101 will be silently removed during the installation - earlier versions cannot be installed, "Another version of this product is already installed. ..." message will be shown 2) 8u102-1 installed: - 8u101 can be installed and will be installed side by side with 8u102-1. I currently see no workaround to prevent this, as 8u101 doesn't have update logic to prevent this - 8u102-2 can be installed, 8u102-1 will be silently removed during the installation 3) 8u102-2 installed: - 8u101 can be installed and will be installed side by side with 8u102-2 (see above) - 8u102-1 cannot be installed, "A later version of [ProductName] is already installed. Setup will now exit." message will be shown. For all versions, running the installer for the version that is already installed will show the "Repair" menu on the second installer screen. If current upgrade logic is not sufficient, I can change (for 8u102 and later) it as will be required. -- This message was sent by Atlassian JIRA (v6.4.11#64026)