Desktop Central supports patch management of a wide range of applications that included both Microsoft and other third-party applications. The required patches are downloaded only once and are stored in the Desktop Central Server from where they are distributed to the agents and distribution servers for installation.
The Online vulnerability Database is a portal in the ManageEngine site, which hosts the latest vulnerability database that has been published after a thorough analysis. Whenever new patches are release by vendors, the patch assessment team will test these patches and update their online patch database. Desktop Central's patch engine will periodically synchronize this information and update its local database. This information is used to detect the missing patches in the computers in the network.
You should configure your proxy server to allow downloading the files containing these information from "patchdb.manageengine.com".
Given below are the websites from where the patches gets downloaded. If you are using a proxy server, the proxy credentials specified in Desktop Central should have necessary privileges to download the EXE files from these sites.
The patches are downloaded only once and they are stored in the Desktop Central Server. The default location where the patches gets stored is <Desktop_Central_Server_Home>/webapps/DesktopCentral/store and is configurable. However, you need to copy the previously downloaded patches to the new location manually, else the patches will get downloaded to the new location again.
You can change the local patch store to a different location using the "Change Patch Store Directory" link available in the Downloaded Patches view.
Patch download happens in the following cases:
In all the three cases above, the Patch Engine will first look for the availability of the patch in the local patch store. The download will happen only if a patch is not available in the local store.
If you experience any problem with the automatic patch download in some specific cases, you can download the patch from the internet and then upload it manually using the Upload Patches option, available in the Downloaded Patches view. Additionally patches can also be uploaded directly from the Download Failed view of Manual Deployment, Automated Patch Deployment and the Test and Approve feature.
You can automate the process of removing unwanted patches from the Patch Repository using the Clean up settings option available in the Downloaded Patches view. Patches that are removed from the Desktop Central server, will automatically be removed from the Distribution Server during the subsequent replication interval.