Using Classic Outlook on Windows for personal email, calendar, and contact management
That would certainly be puzzling when the behavior changed without you modifying anything. Because the Junk Email folder is still present, it likely does not need to be restored.
Please check Home > Junk > Junk E-mail Options in classic Outlook. If No Automatic Filtering is selected, change it to Low and monitor whether suspected spam begins moving to Junk again. Microsoft explains the available settings here: Overview of the Junk Email Filter in classic Outlook.
Could you also confirm whether the messages that previously went to Junk are now appearing in your Inbox? That detail would help distinguish a filtering issue from messages no longer reaching the mailbox. Thank you so much for your understanding.
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