User turned on their Outlook’s Automatic Reply once a week when working from home, set to automatically stop on a specific day/time. This week when it Automatic Reply was disabled (verified) people sending her email were continuing to receive the out of office message. Not just once per day, but for every email. Test confirmed it was still happening. It eventually stopped on its own. They are due to turn it back on; concerned it may happen again.
They have Office Professional 2016 on a Windows 10 computer with Microsoft 365 Business Basic license. They use Outlook desktop app. Verified disabled in Outlook and their account in M365 before doing the test. No relevant advisories in M365.
Sure would like to know why it was happening. Anyone else ever have this happen to them?