In general, there is no problem installing the software, especially the common software that installs Office. But in special cases it still goes wrong, and this day when I installed Office 2010, the following error occurred: The Windows Installer service could not update one or more protected Windows files.
There is no need to worry about this error, it is easy to solve: only need to copy Fp4autl.dll, Fpencode.dll, Fp4awel.dll three files to "C:Program FilesCommon FilesMicrosoft Sharedweb server Extensions40bin "(typically this directory, if you change the information on the registry%system%) This directory is OK.
Where do these three files come from?
One is downloading from the Internet,
Second, from the installation CD-ROM, the Windows installation CD in the I386 directory of the Fp40ext.cab file open (using WinRAR or good pressure), to find the above three files on it.
Note: If for the sake of convenience, can directly extract the above files to the bin directory above, can also solve the problem.