Office cannot install "Windows Installer service cannot update one or more protected Windows files"

This may be the case that some files in the system are missing, usually in the installation of a ghost version or a streamlined system

Open C:\WINDOWS\msagent

See if the contents of the folder are as follows:

Then open C:\Program Files\Common files\microsoft Shared\Web Serverextensions\40\bin

See if it looks like the following:

If the test finds that the file is missing, you can download Office2003miss

or download directly from the following address:

Http://202.199.155.5:1127/uploadfile/office2003miss.rar

After extracting the missing files into the corresponding directory (PS: in C:\Program files\common files\microsoft Shared\Web Serverextensions\40\bin file only three files, In capital letters files are generated after Office is installed, don't worry about them)

Description: The download package after decompression contains multiple files, according to the above 2 picture comparison, their lack of what to put, do not have to put in all.

Acknowledgement: Http://zhidao.baidu.com/link?url=ZK6ZtF_KdA1P7YfkFx6lZ8rZ3dRZTNHSHSDTB4mwH9lS5Z3mv6Mq-9FZRdEvDMS1odZMKZkUUZ8sA0gWuTB3xa

Office cannot install "Windows Installer service cannot update one or more protected Windows files"