You can add the visible and allowUninstall attributes to the UpdateList.xml manifest file to change the behavior of the extensions that are part of the Auto-Update process.
If you do not add the attributes to UpdateList.xml, extensions will continue to be updated using the existing Auto-Update process.
To add the visible and allowUninstall attributes to the Auto-Update extensions, complete the procedure in Configuring Manual Extension Updates.
You can also remove an single extension from the list of extensions available for Auto-Update in the UpdateList.xml file by commenting out the extension using the <!-- and --> characters. For example:
<!-- <extension> location="/epmstatic/disclosure_mgmt/svext/DiscManSetup.msi" version="126.96.36.199.078" id="nnnnnnnn-nnnn-nnnn-nnnn-nnnnnnnnnnnn"> Oracle Disclosure Management </extension> -->
If you comment out the entire list of extensions, then all extensions are excluded from the manual update process.