Hello - I recently renamed a folder and it has now disappeared from Outlook - it is viewable on webmail but I can't find it on Outlook - any ideas?

Hi,
Are you connected to mail server via IMAP?
If you rename a folder it is basically a "new one" for IMAP as you manually subscribe to folders.
If this is the case then go to Tools-> IMAP folders -> click on query, navigate to the renamed folder and select subscribe.

Kind regards,
Wries

Thanks - that's really helpful!