NOTE: Any changes done below only need to be done once on the originating version. When the appliance is upgraded, changes to the existing extensions.conf will be maintained (as will the modified functionality, assuming it's present on the version you are migrating to). WARNING: We do not perform any validation on key/value pair input values. If you input something wrong, it will be written to the config wrong, and could break your system. Be careful!
Log in to AMC. Click on Maintenance in the left-hand navigation menu. In the URL, append "?advanced=1", and hit return. Click on Configure under the new section Configuration extensions. Click New For the Key field, put in AMC_SESSION_TIMEOUT_SECS. For the Value field, put in 900 Click OK. Click Save, Apply Changes (this will force an apply-all, making the changes take effect).