RE: lost outlook express folder when installing AVG 2013 fre

Hi geoff_user,

In case AVG detected to file as infected, it would have been placed in the Virus Vault in order to protect you from the malware. Please check the AVG Virus Vault as described in this FAQ article and restore the file.
If the file is still detected, please find the infected message(s) and delete it from your mailbox file.

There's no other scenario when AVG would have deleted your file. If it was somehow deleted by mistake, you can try software like the Recuva to restore accidentally deleted files. Not all deleted files can be restored though.

Hope this helps.