Some Windows Installer programs that come in .msi format are incompatible with Windows 8 and do not have the “Run as Administrator” option.
The installer needs to be launched with administrative permissions.
- Open Task Manager.
- Click on the “File” menu and “Run new task“.
- Click “Browse” and choose the msi installer file.
- Check “create this task with administrative privileges“.
- Click “OK” to run.