Solution ID: prim80709
SQL Server 2005 Express uninstall fails with Windows Installer error.
Status: Reviewed
Version(s): 6.2.1

Problem: SQL Server 2005 Express uninstall fails with Windows Installer error.
Problem: Error when attempting to uninstall SQL Server 2005 Express:  Windows Installer cannot be correctly accessed.  This error can occur if you are running Windows in safe mode, or the Windows Installer is not correctly installed.  Contact your support for personnel assistance.
Fix: This error can happen if the Windows is in safe mode.  If you are sure that Windows has been started in normal mode, the Windows Installer executable may need to be registered.
  1. Go to Start, Run.

  2. Type cmd then hit <enter>  (This will open up the command prompt).

  3. In the command prompt typr the following:

  4. > msiexec.exe /register   then hit <enter>

  5. The uninstall should run through successfully.