Receiving multiple copies of emails in Outlook Express. Noticed replies to similar questions mention Outlook, so I presume these replies will not work with Outlook Exoress.1 person needs an answerI do too

You have a damaged Pop3uidl.dbx file.Tools | Accounts | Mail | Properties | Advanced. Uncheck: Leave a copy of messages on the server. Then delete the Pop3uidl.dbx file. You will get the messages one more time, but that should be it.Tools | Options | Maintenance | Store Folder will reveal the location of your Outlook Express files. Write the location down and navigate to it in Windows Explorer or, copy and paste it into Start | Run.In WinXP, Win2K & Win2K3, the OE user files (DBX and WAB) are by default marked as hidden. To view these files in Windows Explorer, you must enable Show Hidden Files and Folders under Start | Control Panel | Folder Options Icon | View, or in Windows Explorer | Tools | Folder Options | View.With OE closed, find the Pop3uidl.dbx file and delete it. A new one will be created automatically when you open OE.General precautions for Outlook Express:Do not archive mail in the Inbox or Sent Items. Create your own user defined folders and move the messages you wish to save to them. Empty Deleted Items folder daily. Although dbx files have a theoretical capacity of 2GB, I recommend about a 300MB max for less chance of corruption.Information about the maximum file size of the .dbx files that are used by Outlook Express:http://support.microsoft.com/?kbid=903095After you are done, follow up by compacting your folders manually while working *offline* and do it often.Click on Outlook Express at the top of the folder tree so no folders are open. Then: File | Work Offline (or double click Working Online in the Status Bar). File | Folder | Compact all folders. Don't touch anything until the compacting is completed.Turn off e-mail scanning in your anti-virus program. It is a redundant layer of protection that eats up CPUs and causes a multitude of problems such as time-outs and account setting changes. Your up-to-date A/V program will continue to protect you sufficiently. For more, see:http://www.oehelp.com/OETips.aspx#3Bruce Hagen ~ MS-MVP [Mail]

Many of the problems that cause Outlook to receive duplicate mail are the same for any client, including Outlook Express. When the client and server don't agree that a message has been downloaded properly, even when it has, then the messgae can remain on the server and it appears to be new still the next time the client asks for new messages. The client downloads it again in that case. To find the cause, one must eliminate as much interference in the client/server communications path as possible. One of the things that can cause communications issues is scanning incoming mail with an antivirus program. There really isn't any reason to do that. So, the first thing to try is to uninstall your AV program completely and reinstall it without any mail scanning feature.Brian Tillman [MVP-Outlook]------------------------------If a reply helps, please vote it as helpful. If a reply solves the issue, please mark it as an answer.

Thanks for this wealth of information. I have gone down your list one by one. So far, the result is that I get 9 copies instead of 20! Am also awaiting a reply from the Technical Support team at my ISP. Regards.

Thank you very much. I have done as you suggested (also what Bruce Hagen suggested). I now receive 9 copies instead of 20! Regards.

Thank you for this wealth of information. Have gone down your list one by one, and now I receive 9 copies instead of 20! (I also followed the advice of Brian Tillman about the anti-virus program)Regards,

YW. Make sure you remove the AV program completely and then reboot. Do a custom installation and opt out of e-mail scanning when it is offered.Bruce Hagen ~ MS-MVP [Mail]

The problem appears to have been solved. I tried all the solutions offered by you and by Brian Tillman plus Technical Support at my ISP. I unchecked the boxes on my two different Webmail accounts which said: "Forward copies of emails to the following address....", where I had sent emails from Webmail to my email account which I used in Outlook Express. I also followed Technical Support's advice and uninstalled Outlook Express and installed Incredimail, as they said I may have an "issue" with Outlook Express itself. So, in the end, I don't know which action solved the problem, but it appears to be solved (for now at least!). I thank everybody involved. Regards. Roger