my Outlook but when use the registry Booster to scan I got more error messages. So apparently these errors from Outlook is mucking up my registry. Anyone has any idea about this problem? Please help. Your assistance is greatly appreciated. Thank you. Helen. Firstly, you certainly do not need any registry boosters to solve Outlook data file issues - was this a recommendation made by someone, or was this suggested to you by an automated pop-up? If its the latter, is there any chance you could be infected by some sort of malware? To solve the Outlook issue, do you know where your Outlook data file is being stored? Can you do a search on your computer for all files with this extension: .pst Post back here with your findings. Also, can you tell us about your current system : what anti-virus software are you using. I'm a bit concerned about this Registry Booster : generally speaking, in most cases you really do not need/want to be mucking with the registry at all. Thank you kindly for your help. I'm afraid I have purchased the software online and used it. It found more than 300 errors fromt the registry and fixed it. After that, I was able to see the latest sent mails from the Sent Items folder again. When I checked with Microsoft support I got a pop up about this Registry Booster. They claimed that they are Microsoft Partner. I thought that they are legit. I'm using Norton