Unable to re-install Internet Explorer?

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Issue


You are trying to reinstall Internet Explorer, but the following error messages are displayed:
Setup has detected a newer version of Internet Explorer already installed on your computer. 
or 
Setup can not continue.

Solution


Use the System File Checker tool to analyze the system files and check for errors.
Go to menu Start and select Run,
then type the following command, and confirm by OK:
sfc /scannow
At some point the system may ask you to provide the installation CD of Windows XP or Windows XP Service Pack.
Check if Internet Explorer is working properly, in the other case move the below steps.

Editing the registry

  • Open the registry as administrator.
  • Depending on the version of Internet Explorer, search the appropriate registry subkey, right-click on the IsInstalled (REG_DWORD) value and then click Edit.
  • To reinstall Internet Explorer 6 on Windows XP, use the following registry key:
    • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Active Setup\Installed *Components\{89820200-ECBD-11cf-8B85-00AA005B4383}
  • To reinstall Outlook Express 6 on Windows XP, use the following registry key:
    • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Active Setup\Installed Components\{44BBA840-CC51-11CF-AAFA-00AA00B6015C}
  • Set the value to 0 and then click OK.
  • Close the Registry Editor, and then reinstall Internet Explorer 6 or Outlook Express 6.
  • You can also fix this error by running Windows Update:http://v5.windowsupdate.microsoft.com/fr/default.asp
Jean-François Pillou

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