Solved Microsoft Project 2003 says Project cannot open the file

Microsoft corporation Project 2010 profe...
November 17, 2015 at 08:25:49
Specs: Windows 7, Pentium 4 2GHz / 4 gigs.
I have a user that has been using Project 2003 for several years. He last used one particular file in November, and now when he tries to open it he gets this error message:
Project cannot open the file
--check that the file name & Path are correct
--check that the file format is recognized by project
It is a .mpp file, and was created with and had all modifications done with project 2003. The only thing that has changed in the last several months is an upgrade from Win 2000 to Win XP pro.

I have tried opening this file on other computers and I get the same error message.
I have done a new/fresh install on a computer - same problem
I have repaired and also removed/reinstalled - same prblem


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November 17, 2015 at 09:14:36
I do not use MS Project software,

Have you installed Service Pack 3 for Project?

See here:

This site might also be of assistance:

This is the thread where I found the above link:


message edited by mmcconaghy

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November 19, 2015 at 09:03:09
✔ Best Answer
I need you to look this subject on this authoritative source. Maybe find something useful?
Try some of these troubleshooting steps:

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