Thank you for posting your question in the Microsoft Q&A forum.
In Classic Outlook for Windows, there is no built-in feature to directly search for folders by name. However, you can locate a missing folder by searching for an email that was previously stored in that folder. When you open the message, Outlook will show its current folder location, which can help determine whether the folder was moved or nested under another folder.
To help narrow down the issue, please provide the following details:
-Are you signing in with a personal Microsoft account (for example, @outlook.com or @hotmail.com) or with a work/school account?
-What type of account is configured in Outlook (POP, IMAP, or Exchange)?
-Is the missing folder a default folder? If so, please refer to Default folder is missing in Outlook and Outlook on the web - Outlook | Microsoft Learn.
-Did you check Outlook on the web (OWA) to see if the folder is still visible there?
-Have you checked the Deleted Items folder? Expand it by clicking the arrow next to it, as shown in the example image, to see if the folder was accidentally deleted.
-Also check whether the folder may have been moved and is now a subfolder under another folder.
Please know that while our initial response might not resolve the issue right away, your input is incredibly valuable. With a bit more detail, we’ll work together to find the best solution for you.
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