While sending an email through the Outlook desktop app, if you see an error message saying Microsoft Outlook cannot sign or encrypt this message because there are no ...

This problem often occurs when your local Outlook client uses outdated cached policy data rather than obtaining the latest encryption or labeling settings from Microsoft 365. Outlook has multiple ...

Forbes contributors publish independent expert analyses and insights. Davey Winder is a veteran cybersecurity writer, hacker and analyst. Update, Nov. 24, 2024: This story, originally published Nov.