FIX: Outlook Signatures Missing after Office Update. (Disable Outlook Roaming Signatures).
If your Outlook Signatures are missing/disappeared after an Office update, in this guide you'll learn how to restore them by disabling the Outlook "Roaming Signatures" feature. Many users reported that after updating Microsoft Office they cannot set the default signature for new and replies/forwards messages in Outlook, because their signatures are missing in "Signatures" settings/options.