Many people might have faced this error. Even i had faced the same some days ago, so to help others with a quick fix. I am posting the steps required to deal with it.
- Click Start > My Computer > Manage
- Expand Services and Applications at Computer Management tree
- Click on Services, scroll down to Windows Installer, right click on it and at Start up type just select Manual.
- Save the changes by clicking on Apply and OK and you are done.
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