How to Repair Outlook Express in Windows XP

Using the System File Checker Wizard
1. Click 'Start,' click 'Run,' type 'sfc /scannow' and click 'OK.'
2. The 'System File Checker Wizard' opens. Follow the directions.
3. Restart your computer when complete.
Using Internet Explorer
4. Open Internet Explorer. Internet Explorer is closely related to Outlook Express, so problems with temporary Internet files stored under Internet Explorer can be affecting the operation of Outlook Express.
5. Click 'Tools' and click 'Internet Options.'
6. Click 'Delete' under 'Browsing history,' select the 'Temporary Internet Files' option and click 'OK.'
Re-registering Libraries
7. Click 'Start,' then 'Run.'
8. Type 'regsvr32 urlmon.dll' into the Run box and click 'OK.' Click 'OK' on the 'DllRegisterServer succeeded' dialog box.
9. Type 'regsvr32 mshtml.dll' into the Run box and click 'OK.' Click ' OK' on the 'DllRegisterServer succeeded' dialog box.
10. Type 'regsvr32 shdocvw.dll' into the Run box and click 'OK.' Click ' OK' on the 'DllRegisterServer succeeded' dialog box.
11. Type 'regsvr32 browseui.dll' into the Run box and click 'OK.' Click ' OK' on the 'DllRegisterServer succeeded' dialog box.
12. Type 'regsvr32 msjava.dll' into the Run box and click 'OK.' Click ' OK' on the 'DllRegisterServer succeeded' dialog box.
Reinstalling Outlook Express
13. Click 'Start,' then 'Run.'
14. Type '%systemroot%\inf' and click 'OK.' The 'Windows\inf' folder opens.
15. Look for 'MSOE50.inf,' right-click on the file and then select 'Install.' This process is going to reinstall Outlook Express on your system. You may need your Windows XP disc.