Sending, receiving, and organizing email in Outlook.com
Hi, if “Signatures” is missing, it usually means the feature is not enabled for your account yet or restricted by your organization. Try opening Outlook in another browser or use InPrivate mode, then check again under Settings → Account → Signatures. If it still does not appear, use Settings → Mail → Compose and reply and create your signature there, then save. If neither option exists, your admin needs to enable it for your account.