Your question doesn't have a lot of detail to it, so this is a general answer.
I would suggest repairing the installation from the Control Panel > Add/Remove Programs
. Choose to repair rather than remove. If that doesn't work, check the article below.
This can be caused by the user not having proper permissions to complete the installation, a third party program restricting the use or complete installation, or the user not having enough permission to use the types of files associated with the program.
Here is a MS Support article related to this - You receive an error message when you install an Office program or open an Office program or document