How to Fix Internal Errors 2501, 2502 or 2503 While Installing from .msi files in Windows

In Windows 8, you can see an error 2501, 2502 or 2503 when you try to install any application program or game from some .msi (Microsoft Installer) files. You can see the same error when you try uninstall some applications or games. The error message is like the one shown below:

Internal error 2502

Internal error 2503

Internal error 2501, 2502 or 2503 or combination of these may occur. Whatever, above screenshots are taken when i got these error messages while i  was trying to install NVIDIA 3D vision video player in my computer. The error message is as follows:

The installer has encountered an unexpected error installing this package. This may indicate a problem with this package. The error code is 2503. (or 2502 or 2501).

You will be given an OK button which when pressed causes the installation (or uninstallation) to terminate. The Microsoft installer alleges problems with the package. But the problem is actually with Windows. This can be simply solved or fixed by a very simple trick. I'll tell you how to solve the error.:

1. Open Task manager (By pressing Ctrl + Alt + Delete)
2. Select the processes tab
3. Locate the process Windows Explorer.
4. Right Click on it and Select End Process.
5. Now Open file menu (in task manager).
6. Select Run New Task.
7. Type explorer in the text field
8. Check (tick) the option 'Create this task with administrative privileges'
9. Click Ok button.
10. Now run the setup file again. It will work now!

The error is fixed now. The following video will show you how to fix or solve the problem.