office 2007 :The windows installer service cannot update one or more protected windows

December 17, 2007 — 108 Comments

I am trying to install Office 2007 onto a clean install of Windows XP (on a friends eee PC – it is really a sweet little laptop.. anyway), I get the error above about protected files. Here is the solution. (This may have happened because in optimizing XP down, some files were deleted).

1. From Windows install disk goto E:\I386 folder and open open (Double click) on the FP40EXT.CAB file. It should open.

(or – if you do not have the disk, find a working XP computer and go to C:\Program Files\Common Files\Microsoft Shared\web server extensions\40\bin).

2. find fp4autl.dll in the list and copy it (ctrl-c)

3. go to c:\program files\common files\microsoft shared\web server extensions\40\bin and paste it (ctrl-v)

4. Restart the 2007 office install

Viola! (thanks guys over at

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Ben Shoemate

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Ben Shoemate is a web designer and information architect. He cofounded Base22 where he designs and builds corporate intranets, web applications, social networking sites, and web strategies. For fun he does more of the same.
  • Thiru

     thanks  it working good….

  • Hardik Shah

    Thanks…it worked perfectly

  • BK

    At last!! Thank you very much.

  • Artblue84


  • Joey Bilaran

    thks a lot hehehe