I had a problem with some clients running on old code (e.g. experiencing bugs that have already been fixed). The following job resets the GUID which in turn forces all clients to create a new program cache file (AX_*.auc). A restart of the AOS is required. static void forceNewAUC(Args _args) { #AiF SysSQMSettings sysSQMSettings; ; ttsbegin ; update_recordset sysSQMSettings setting GlobalGUID = str2Guid(#EmptyGuidString); ttscommit ; info(" Restart the AOS Service to generate a new GlobalGUID."); } Another option would be adding the following to the Info.startupPost() method, however I’m not sure if this is a cleaver thing to do routinely, but if you cannot restart the AOS it is you only option. xSession::removeAOC(); SysTreeNode::refreshAll(); SysFlushDictionary::doFlush(); SysFlushAOD::doFlush(); xSession::updateAOC();