This article is a legacy article. It applies to previous versions of the Liferay product. While the article is no longer maintained, the information may still be applicable.
When there are updates to plugins in the Liferay Marketplace, it is possible to receive on-screen notifications regarding the newer versions of those plugins within the portal. There is a portal property to allow administrators to either turn on or turn off these notifications.
Resolution
By default and as of Liferay Portal 6.0SP2, when there is a new version of any installed plugin, the administrator(s) will receive a notification within their instance of Liferay Portal. This is due to the implementation of the portal.property that reads:
# Set this property to false to avoid receiving on screen notifications
# when there is a new version of an installed plugin.
#
plugin.notifications.enabled=true
If you would like to disable on-screen notifications about newer versions of an installed plugin, do as it says and set the property to false in your portal-ext.properties file and restart the server.
Additional Information
https://www.liferay.com/group/customer/support/-/support/ticket/VOLKSWAGENUS-118
LPS-36226