After uninstalling IE50 due to a proxy server problem I lost 3 months of email from outlook express. Any ideas to retrieve?

Chances are your email from IE4's Outlook Express is still there. I checked a machine on my network that used to have IE4/OE4 that was upgraded to IE5 and it still had the old email "folders". IE4's Outlook Express 4 saved email on the following path by default: C:\windows\application data\microsoft\outlook express\mail\*.ibx *.mbx (a combo of two files for each folder i.e. inbox.ibx/inbox.mbx etc. Open Outlook Express. Click |File|Import|Messages...| Choose Microsoft Outlook Express 4 as the type of messages to import. Click |Next| |Browse| to the path given above. If the old email isn't there search the hard drive for files ending in ".mbx" with the Find feature on the Start Menu. If the old mail isn't on the computer anymore, check Full Backups to see if the above files are on them. Good-luck Dan P.S. IE5 saves email in: c:\windows\application data\identities\e95bf040-5cbc-11d3-ad8e00a0cc343a51\microsoft\outlook express\*.dbx explanation: the above path with have an identities subdirectory with a different name than is above, your email folders Inbox,Outbox,Deleted Items, etc. are just big files that have a *.dbx extension.

Oops, right answer, wrong question. I just read your remark, "careful, when I uninstalled ie50 because of a proxy problem I lost 3 months of email in outlook express." Am sorry that I didn't read your question more carefully. IE5 out IE4 back in. OK I incorrectly assumed an upgrade not a necessary return to a previous version. If the subdirectory with the mail folders is gone and you have no backup, I know of no way of getting back the email short of the remote possiblity that an undelete program might find the *.dbx files still there...fat chance.

I had to uninstall MSIE 5 and revert to MSIE 4 when the Repair IE 5 function wouldn't work. Then OE 5 wouldn't work, so I uninstalled OE 5 and the process automatically restored OE 4, except for the mail downloaded by OE 5. File|Import function successfully restored the OE 5 mail to OE 4. The copies of the IE 5 folders were in the Mail folder.