Hi @Stu74, let me understand: are the UFs in missing status really missed or it's a wrong state? are youspeaking of the Monitoring Console App or of the Deployment Server? If you're speaking of the MC and they really are out of perimeter, you have only to rebuild the perimeter lookup and you'll have a correct situation. if you're speaking of the DS, you should analyze your perimeter listing the servers that should be active, then check the installation and delete the out of perimeter from the DS. You don't need (only for this reason) to reinstall the UF, obviously, you have to upgrade it if you need an upgrade. Ciao. Giuseppe
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